Even with add-ons disabled, TB is crashing within minutes of opening. Crash report: AdapterDeviceID: 0x0fd5 AdapterVendorID: 0x10de Add-ons: %7Be2fda1a4-762b-4020-b5ad-a41df1933103%7D:4.7.1.1,%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:45.1.1 AddonsShouldHaveBlockedE10s: 1 BuildID: 20160527062949 CrashTime: 1465433410 EMCheckCompatibility: true Email: EventLoopNestingLevel: 1 FramePoisonBase: 7ffffffff0dea000 FramePoisonSize: 4096 InstallTime: 1464817311 Notes: AdapterVendorID: 0x10de, AdapterDeviceID: 0x0fd5GL Context? GL Context+ ProductID: {3550f703-e582-4d05-9a08-453d09bdfdc6} ProductName: Thunderbird ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 13599 StartupTime: 1465432919 TelemetryEnvironment: {"build":{"applicationId":"{3550f703-e582-4d05-9a08-453d09bdfdc6}","applicationName":"Thunderbird","architecture":"x86-64","buildId":"20160527062949","version":"45.1.1","vendor":null,"platformVersion":"45.1.1","xpcomAbi":"x86_64-gcc3","hotfixVersion":null,"architecturesInBinary":"i386-x86_64"},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":8192,"virtualMaxMB":null,"cpu":{"count":8,"cores":4,"vendor":"GenuineIntel","family":6,"model":58,"stepping":9,"l2cacheKB":256,"l3cacheKB":6144,"speedMHz":2400,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2"]},"os":{"name":"Darwin","version":"15.5.0","locale":"en-US"},"hdd":{"profile":{"model":null,"revision":null},"binary":{"model":null,"revision":null},"system":{"model":null,"revision":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"adapters":[{"description":null,"vendorID":"0x10de","deviceID":"0x0fd5","subsysID":null,"RAM":null,"driver":null,"driverVersion":null,"driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":1440,"screenHeight":900,"scale":2},{"screenWidth":1920,"screenHeight":1080,"scale":1}],"features":{"compositor":"none"}}},"settings":{"blocklistEnabled":true,"e10sEnabled":false,"telemetryEnabled":true,"isInOptoutSample":false,"locale":"en-US","update":{"channel":"release","enabled":true,"autoDownload":true},"userPrefs":{"browser.cache.disk.capacity":512000,"privacy.donottrackheader.enabled":true},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":null},"profile":{"creationDate":16883},"addons":{"activeAddons":{"{e2fda1a4-762b-4020-b5ad-a41df1933103}":{"blocklisted":false,"description":"An integrated calendar for Thunderbird","name":"Lightning","userDisabled":false,"appDisabled":false,"version":"4.7.1.1","scope":1,"type":"extension","foreignInstall":0,"hasBinaryComponents":false,"installDay":15681,"updateDay":16960}},"theme":{"id":"{972ce4c6-7e08-4474-a285-3208198ce6fd}","blocklisted":false,"description":"The default theme.","name":"Default","userDisabled":false,"appDisabled":false,"version":"45.1.1","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":14610,"updateDay":16953},"activePlugins":[],"activeGMPlugins":{},"activeExperiment":{},"persona":null}} Theme: classic/1.0 Throttleable: 1 Vendor: Version: 45.1.1 useragent_locale: en-US This report also contains technical information about the state of the application when it crashed.