About:Config opens for a fraction of a second, then returns a blank page
When attempting to open Firefox's about:config page, it shows the confirm/warning screen for a fraction of a second, then seems to redirect to a blank page.
I first noticed this just after installing Minefield, which I have now uninstalled - though I do not use about:config often and the issue could have started before then.
All Replies (1)
Did you use the same Firefox 3.6.x profile folder with the Minefield 4.0 version?
You should be careful with doing that because the two versions are not compatible (some files may get upgraded; extensions.sqlite) and you can get problem if you use that profile in the future again with a 4.0 version.
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems
Create a new profile as a test to check if your current profile is causing the problems
See Basic Troubleshooting: Make a new profile
There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins"
If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)
See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox