This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I installed Firefox4 and I get an error message everyday about the platform version incompatibility of the XUL, which forces me to re-install firefox everyday.

  • 2 respostas
  • 3 have this problem
  • 1 view
  • Last reply by pmota

more options

Since I installed Firefox 4 I keep on getting the error "Platform version 2.0 not supported with...". Is there any way to update the XUL file? I do re-instalations everyday (after the re-instal, firefox runs smooth)

Since I installed Firefox 4 I keep on getting the error "Platform version 2.0 not supported with...". Is there any way to update the XUL file? I do re-instalations everyday (after the re-instal, firefox runs smooth)

All Replies (2)

more options

Do a clean (re-)install:

  • Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
  • Don't remove personal data if you uninstall the current version.
  • It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

Your bookmarks and other profile data are stored elsewhere (not in the Firefox program folder) and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

more options

I've done that a couple of times, and still have the same error message...right now I have the instalation file on my desktop and when I start my computer I install firefox...

Any other solution? what can cause this?