hi mozillification, thanks for reporting this. could you please enter about:support into the address bar and copy/paste the content of the features section into a reply here in the forum.

what you could try to rectify this problem is to download and reinstall firefox 61 from https://www.mozilla.org/firefox/all/ and see if this makes the problem go away...

Hi mozillification, it's my first time looking at the "Home" panel. I don't know what could cause the "Firefox Home Content" section to be missing from the Options page...

For the new tab page being completely blank:

Could you take a look "under the covers" -- here's how:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste newt and pause while the list is filtered, then scroll down to the lower part of the list

(3) If the browser.newtabpage.enabled preference is bolded and "modified" or "user set" to false, double-click it to restore the default value of true

If you changed that, try opening a new tab and "reload" using Ctrl+r. Any improvement?

If this preference has the "locked" status, then you can't change it and we'll need to help you track down the source of the problem

Application Basics

Name: Firefox Version: 61.0 Build ID: 20180621125625 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0 OS: Windows_NT 6.1 Multiprocess Windows: 1/1 (Enabled by default) Web Content Processes: 5/4 Enterprise Policies: Inactive Google Key: Found Mozilla Location Service Key: Found Safe Mode: false

Crash Reports for the Last 3 Days

All Crash Reports Firefox Features

Name: Activity Stream Version: 2018.05.30.0900-c6d48b86 ID: [email protected]

Name: Application Update Service Helper Version: 2.0 ID: [email protected]

Name: Firefox Screenshots Version: 32.1.0 ID: [email protected]

Name: Follow-on Search Telemetry Version: 0.9.7 ID: [email protected]

Name: Form Autofill Version: 1.0 ID: [email protected]

Name: Photon onboarding Version: 1.0 ID: [email protected]

Name: Pocket Version: 1.0.5 ID: [email protected]

Name: Web Compat Version: 2.0 ID: [email protected]

Name: WebCompat Reporter Version: 1.0.0 ID: [email protected]

Extensions

Name: Kaspersky Protection Version: 5.1.94.27d-20180322143330 Enabled: true ID: [email protected]

Name: NoScript Version: 10.1.8.2 Enabled: true ID: {73a6fe31-595d-460b-a920-fcc0f8843232}

Name: The Camelizer Version: 2.10 Enabled: true ID: [email protected]

Name: Archive Version: 3.0 Enabled: false ID: [email protected]

Name: Decentraleyes Version: 2.0.4 Enabled: false ID: jid1-BoFifL9Vbdl2zQ@jetpack

Name: Tab Mix Lite Version: 4.36.6 Enabled: false ID: [email protected]

Name: uBlock Origin Version: 1.16.10 Enabled: false ID: [email protected]

Name: View Page Archive & Cache Version: 1.5.1 Enabled: false ID: {d07ccf11-c0cd-4938-a265-2a4d6ad01189}

Security Software

Type:

Type:

Graphics

Features Compositing: Direct3D 11 (Advanced Layers) Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000853c) EGL_VERSION: 1.4 (ANGLE 2.1.0.fcbca0e873c3) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses WebGL 1 Driver Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 5500 Direct3D11 vs_5_0 ps_5_0) WebGL 1 Driver Version: OpenGL ES 2.0 (ANGLE 2.1.0.fcbca0e873c3) WebGL 1 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_sRGB EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context WebGL 2 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000853c) EGL_VERSION: 1.4 (ANGLE 2.1.0.fcbca0e873c3) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses WebGL 2 Driver Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 5500 Direct3D11 vs_5_0 ps_5_0) WebGL 2 Driver Version: OpenGL ES 3.0 (ANGLE 2.1.0.fcbca0e873c3) WebGL 2 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_multiview GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object WebGL 2 Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context Direct2D: true Off Main Thread Painting Enabled: true Off Main Thread Painting Worker Count: 1 DirectWrite: true (6.2.9200.22164) GPU #1 Active: Yes Description: Intel(R) HD Graphics 5500 Vendor ID: 0x8086 Device ID: 0x1616 Driver Version: 20.19.15.4531 Driver Date: 9-29-2016

thanks, i don't know how this happened, but the activity stream system addon which powers the newtab page didn't seem to get updated properly to the version for firefox 61. a reinstall will hopefully fix this.

I had to cut the end off the about:support to keep to within 10000 characters post limit.

Philipp: Thanks for your suggestions. I had to cut the end off the about:support text to keep to within 10,000 characters post limit.

Jscher2000: Thank you also. The browser.newtabpage.enabled preference was already set to true, so I have left it like that.

I will try re-installing, keeping my existing profile.

oh sorry, when i compare that with my installation, Activity Stream v.2018.05.30.0900-c6d48b86 is what should show up with firefox 61. when i remove the addon from the firefox installation directory i got the same symptoms like you did in your screenshot though. hm...

Downloading and reinstalling made no difference. The Firefox Home Content section is still missing from the about:preferences#home settings page.

Are there any other about:config settings that might be preventing content on the Firefox home page?

The bit that is missing is circled in the attached screenshot, taken from https://www.ghacks.net/2018/06/26/firefox-61-0-release-overview/

mozillification said

Name: Activity Stream
Version: 2018.05.30.0900-c6d48b86
ID: [email protected]

philipp said

thanks, i don't know how this happened, but the activity stream system addon which powers the newtab page didn't seem to get updated properly to the version for firefox 61. a reinstall will hopefully fix this.

As a another data point, I have that same version listed on about:support. When I open the .xpi file in a Zip program and view the install.rdf file in a text editor, it does indicate:

   <em:targetApplication>
     <Description>
       <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
       <em:minVersion>61.0</em:minVersion>
       <em:maxVersion>61.*</em:maxVersion>
     </Description>
   </em:targetApplication>

So the old date might be normal.

Hi mozillification, do you use either a userChrome.css or userContent.css custom style rules file? Those are not included with Firefox; you would have had to set those up yourself.

Could you test in Firefox's Safe Mode? In its Safe Mode, Firefox temporarily deactivates those customization files, extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.)

If Firefox is running: You can restart Firefox in Safe Mode using either:

• "3-bar" menu button > "?" Help button > Restart with Add-ons Disabled
• (menu bar) Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

Hi jscher2000, those .css references aren't known to me, and as I installed and set up Firefox, I assume I am not using them. To be sure something else didn't create them, I searched my C:\ drive and didn't find either of them.

I tested launching in safe mode. No improvement, unfortunately.

does creating & launching a new profile for testing purposes show the same problem?: Profile Manager - Create, remove or switch Firefox profiles

I tried my test profile (created a long time ago) and that one works. It has the expected home page and the Firefox Home Content settings are available. So perhaps that's a clue to the issue?

thanks for hanging in & continuing to troubleshoot the issue with us :-) perhaps it's some sort of old legacy settings playing up here.

could you switch back to the affected profile try go to the firefox menu ≡ > help ? > troubleshooting information, click on profile folder/show folder and close all firefox windows afterwards. a windows explorer window should open up - in there copy the file named prefs.js (and user.js in case it's existing) to a safe backup location and afterwards delete it from your profile - it will be regenerated again the next time you launch the browser. in case that made things any better, i may reach out to you via pm to get a glance into this settings file. if it hasn't helped, you could restore the backed-up file to your profile again...

hmm...interesting report I'll have to update my FF60.0.2 to FF61 to see if I get the same results but I also use custom css so I might or might not get that problem as well. Also when you uninstalled FF did you also delete the Mozilla folder? And where did you reinstall FF if you uninstalled FF from?

Hi philipp, thank you for your continued help. I closed Firefox, backed up prefs.js (user.js didn't exist), then reopened. The Firefox Home Content section remined missing from about:preferences#home. New tabs did look a little different to before. They had placeholders for tiles, and there was a settings icon top RHS. The settings icon didn't do anything when clicked on. Visiting some websites didn't result in shortcuts populating the tiles on the Firefox home tab. That aspect seems non-functional.

Unfortunately, this test has caused a much bigger problem. All my previous session tabs were missing, containing my work in progress and reminders to check certain websites periodically, basically stuff I'll have a hard time living without, so closed Firefox and overwrote prefs.js with the backup. Oh No! my tabs are still missing. It is now a higher priority to get the tabs back than to fix the homepage. I went through something like this about a year ago but I can't remember the fix. The old sessionstore backup restore method changed a while back. Can you help me with that please?

Westend: I downloaded the offline installer, closed FF, then ran the installer without doing any uninstall or profile deletion. It was basically an install over the top of the existing installation.

Got to get those tabs back. Help!

do you have an option to restore the previous session in the dropdown, when go to the firefox menu ≡ ?

The restore previous session did not work, as I had closed and reopened once too many times. After some searching I found a similar solution here: https://support.mozilla.org/en-US/questions/1189759. I closed FF, renamed sessionstore.jsonlz4 to sessionstoreOLD.jsonlz4, copied upgrade.jsonlz4-20180621125625 from the sessionstore-backups folder to the profile main folder and renamed it sessionstore.jsonlz4, restarted FF and my old tabs are back. That's a relief.

So now I'm back to the previous first world problem of the missing Firefox Home Content settings.

thanks, the developers working on this would be interested if any errors are showing up in the browser console (ctrl+shift+j) or web console (ctrl+shift+k) while you're loading/refreshing the new tab page.

ctrl+shift+j gives some interesting stuff:

1530046830499 addons.xpi WARN Ignoring missing add-on in C:\Program Files\Bitdefender\Bitdefender 2015\\antispam32\bdwteff Bootstrapped manifest not allowed to use 'resource' directive. chrome.manifest:1 Bootstrapped manifest not allowed to use 'resource' directive. chrome.manifest:7 Bootstrapped manifest not allowed to use 'resource' directive. chrome.manifest:2 1530046830755 [email protected] WARN Please specify whether you want browser_style or not in your page_action options. 1530046830763 addons.webextension.light_plugin_A07576A3CEBC4A72A8CF2C925907DB05@kaspersky.com WARN Please specify whether you want browser_style or not in your browser_action options. 1530046830764 addons.webextension.{73a6fe31-595d-460b-a920-fcc0f8843232} WARN Please specify whether you want browser_style or not in your browser_action options. Warning: attempting to write 4311 bytes to preference browser.uiCustomization.state. This is bad for general performance and memory usage. Such an amount of data should rather be written to an external file. This preference will not be sent to any content processes. NS_ERROR_NOT_AVAILABLE: Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIWebNavigation.loadURIWithOptions] browser-child.js:352 Loading failed for the <script> with source “moz-extension://ea33c5c9-c63e-4d5f-9d6e-44a0e21349a7/camelhump.js”. _generated_background_page.html:5 Loading failed for the <script> with source “moz-extension://ea33c5c9-c63e-4d5f-9d6e-44a0e21349a7/background.js”. _generated_background_page.html:6 Loading failed for the <script> with source “moz-extension://ea33c5c9-c63e-4d5f-9d6e-44a0e21349a7/get_asins.js”. _generated_background_page.html:7 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/lib/uuid.js”. _generated_background_page.html:5 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/lib/log.js”. _generated_background_page.html:6 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/lib/include.js”. _generated_background_page.html:7 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/lib/punycode.js”. _generated_background_page.html:8 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/lib/tld.js”. _generated_background_page.html:9 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/common/Policy.js”. _generated_background_page.html:10 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/common/locale.js”. _generated_background_page.html:11 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/common/Entities.js”. _generated_background_page.html:12 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/common/SyntaxChecker.js”. _generated_background_page.html:13 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/common/Storage.js”. _generated_background_page.html:14 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/ui/Prompts.js”. _generated_background_page.html:15 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/xss/XSS.js”. _generated_background_page.html:16 Loading failed for the <script> with source “moz-extension://ed88547e-05f5-4410-b424-030af9e2087e/bg/main.js”. _generated_background_page.html:17 Warning: attempting to write 4311 bytes to preference browser.uiCustomization.state. This is bad for general performance and memory usage. Such an amount of data should rather be written to an external file. This preference will not be sent to any content processes. Loading failed for the <script> with source “moz-extension://646d974d-1362-46b7-815c-59225d9fdbfa/background.js”. _generated_background_page.html:5 IndexedDB UnknownErr: ActorsParent.cpp:17599 PushService: stateChangeProcessEnqueue: Error transitioning state UnknownError PushService.jsm:145 Loading failed for the <script> with source “moz-extension://225a5184-861c-4453-9916-42a806cb4ba8/build/buildSettings.js”. _generated_background_page.html:5 Loading failed for the <script> with source “moz-extension://225a5184-861c-4453-9916-42a806cb4ba8/background/startBackground.js”. _generated_background_page.html:6 IndexedDB UnknownErr: ActorsParent.cpp:17599 Public-Key-Pins: The certificate used by the site was not issued by a certificate in the default root certificate store. To prevent accidental breakage, the specified header was ignored.[Learn More] favicon.ico NS_ERROR_NOT_AVAILABLE: Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIWebNavigation.loadURIWithOptions] browser-child.js:352 Key event not available on some keyboard layouts: key=“i” modifiers=“accel,alt,shift” id=“key_browserToolbox” browser.xul [Show/hide message details.] onboarding-session-end should pass valid session_key OnboardingTelemetry.jsm:378 IndexedDB UnknownErr: ActorsParent.cpp:17599 [Show/hide message details.] this._recipeManager is null LoginManagerParent.jsm:84 NS_ERROR_NOT_AVAILABLE: Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIWebNavigation.loadURIWithOptions] browser-child.js:352 Warning: attempting to write 4311 bytes to preference browser.uiCustomization.state. This is bad for general performance and memory usage. Such an amount of data should rather be written to an external file. This preference will not be sent to any content processes. IndexedDB UnknownErr: ActorsParent.cpp:17599 undefined

ctrl+shift+k doesn't give anything, just a blank pane.