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Cannot open the application “Firefox.app” because it is not supported on this architecture—what does that mean?.

  • 1 reply
  • 19 have this problem
  • 38 views
  • Last reply by TonyE

amandageisinger
amandageisinger
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Firefox has always worked fine...until I installed v4. Now I get the above error, and it won't launch. I'm running OSX v10.5.8, and all of my drivers/software are up to date.

Firefox has always worked fine...until I installed v4. Now I get the above error, and it won't launch. I'm running OSX v10.5.8, and all of my drivers/software are up to date.

All Replies (1)

TonyE
TonyE
  • Moderator
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Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox

If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

Mozilla are working to prevent Mac users with non-compatible systems from getting the notification about Firefox 4, and also not displaying the "Download Firefox 4" button on http://www.mozilla.com