Getting error FF with my extension: cant find the file at jar:file in omni.jar!/chrome/browser/content/browser/ some junk text

Question

After installing my plugins to ff4 and ff5 I am getting error File not found.
Firefox can't find the file at jar:file:///Applications/Firefox.app/Contents/MacOS/omni.jar!/chrome/browser/content/browser/%E6%A5%A6%E6%95%AC%E2%BC%BA%E2%BC%AF%E7%8D%95%E7%89%A5%E2%BD%B3%E6%B5%A1%E6%B1%AF%E4%B0%AF%E6%89%A9%E6%85%B2%E7%A5%B2%E4%84%AF%E7%81%B0%E6%A5%AC%E6%85%A3%E6%A5%B4%E6%B9%AF%E3%88%A5%E5%8C%B0%E7%81%B5%E6%BD%B0%E7%91%B2%E4%84%AF%E6%BD%A4%E6%95%A2%E4%8C%AF%E6%B9%AF%E7%89%B4%E6%89%A9%E7%91%B5%E2%95%A5%E3%80%B2%E5%8D%83%E2%B8%B5%E2%BC%B1%E6%BD%83%E6%99%AE%E6%9D%A9%E7%89%B5%E7%91%A1%E6%BD%A9%E2%BD%AE%E4%89%89%E5%91%85%E6%B5%A5%E2%BD%B0%E6%BD%83%E7%91%AE%E6%A5%B2%E7%95%A2%E6%95%B4%E3%84%B6%E3%9C%B8%E3%90%B4%E2%B8%B3%E6%89%A9e%E3%90%B4%E2%B8%B3%E6%89%A9e%08%01%EC%92%B0%E0%B0%BE%EC%92%B8%E0%B0%BE%EC%92%BC%E0%B0%BE%EF%BF%BF%EC%93%80%E0%B0%BE.

Answer 1

Try:
"Reset all user preferences to Firefox defaults" on the [[Safe mode]] start window.
* http://kb.mozillazine.org/Resetting_preferences
Delete the files extensions.* (extensions.sqlite, extensions.rdf, extensions.cache, extensions.ini) and compatibility.ini in the Firefox [[Profiles|profile folder]] to reset the extensions registry.<br />
New files will be created when required.
See "Corrupt extension files":
* http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the Tools button at the left side of the Search Bar (or click the "Find Updates" button in older Firefox versions) to do a compatibility check or see if there is an update.
Create a new profile as a test to check if your current profile is causing the problems.
See:
* [https://support.mozilla.com/kb/Basic+Troubleshooting#w_8-make-a-new-profile Basic Troubleshooting: Make a new profile]
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