Corrupt localstore.rdf

• http://kb.mozillazine.org/Corrupt_localstore.rdf

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I was able to get it working, but not *exactly* like the description you sent me. Here is what I did:

(1) First I verified that error still occurs. The interesting thing here is that the toolbar doesn't get lost when I use "restart firefox" (Ctrl-Alt-R), but only when I exit Firefox and then start it again.

(2) I exited Firefox and went to the profile folder. I found that there are two profile folders, not one:

...\AppData\Roaming\Mozilla\Firefox\Profiles\22y5k01i.default

and

...\AppData\Local\Mozilla\Firefox\Profiles\22y5k01i.default

The timestamp on 22y5k01i.default is the same for both profiles, but the content is different: Only the ...\Roaming\....\22y5k01i.default folder contained a file localstore.rdf, but the ...\Local\.....\22y5k01i.default folder did not.

(3) I erased localstore.rdf

(4) I started Firefox again

(5) Now I had expected to see the default toolbars, but in fact I saw my recently created toolbars recreated!!!! This effect seems to persist - even repeatedly closing Firefox and starting again, keeps my toolbar.

In effect, *erasing* the localstore.rdf had brought me back my toolbar, which is something I don't really understand.

You can Start Firefox using Different Profiles to see the changes among them.

Profile Manager

• https://support.mozilla.com/en-US/kb/Managing-profiles#w_starting-the-profile-manager

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click on "Solved It" next to the reply ABOVE that BEST solved your question

DO NOT click "Solved It" next to this reply

I don't have different profiles. I have only one (and, actually, don't need another one right now). As you can see from my post, it's called 22y5k01i.default, and stored in two places. If I would have different profiles, they would have different names, don't they?

Profile folder - Firefox

• http://kb.mozillazine.org/Profile_folder_-_Firefox

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Thanks, but I knew this page already. It just shows how to find the location of the profile folder, which I know anyway. This is not related to the disappearing toolbars.

In the meantime, the toolbar had disappeared again, and I had to restore it. I found that the fastest way to restore it, goes like this:

If, after starting Firefox, I see that my toolbar is gone, I first erase localstore.rdf, then exit Firefox, and then start Firefox again. After this, my toolbars are restored.

If I exit Firefox first, and then erase localstore.rdf, the toolbars are gone forever and need to be recreated manually. Had to learn that the hard way.

I think I was too optimistic. Toolbar is gone again, and neither deleting localstore.rdf and restarting Firefox, nor restoring the saved localstore.rdf (saved at a time where my custom toolbaras were visible).

After more investigation, I think a corrupt localstore.rdf is not the problem. There must be a different cause for this cause. I believe this for two reasons:

(1) localstore.rdf *does* contain the entry for the saved toolbar:

.... <NC:persist RDF:resource="chrome://browser/content/browser.xul#customToolbars"/>

</RDF:Description> ....

 <RDF:Description RDF:about="chrome://browser/content/browser.xul#customToolbars"
                  toolbar1="bleibda:zoom-controls"
                  toolbar2="nochmehr:sync-button" />

....

(2) It is also not the case that I look at the wrong profile folder, because: Not only have a never created a separate profile, but I also can see that localstore.rdf is updated when I restart it.

-> Troubleshooting extensions and themes

• https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

IF the solutions in above link doesn't work, see this:

-> Preferences are not saved - User.js file overriding preferences

• https://support.mozilla.com/en-US/kb/Preferences%20are%20not%20saved#w_user-js-file-overriding-preferences
• DELETE ALL LINES in user.js file

Check and tell if its working.

I don't have a User.js file, but testing the addons is certainly the next logical step. I have already started it, but it will take some time, because the effect of the disappearing toolbars is not so obviously reproducible (it requires a reboot of the PC to really make sure that it occurs, though sometimes it also occurs by just restarting Firefox). I will post my findings here as soon as I have any, but this might take a couple of days...

I solved it. It was indeed a compatibility issue with an extension. When I disabled the add-on "Browser Backgrounds 1.7", the problem disappeared.

Thank you for helping!