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MacOS10.5.8 error message Firefox not supported on this architecture????
Quit Firefox with 4 open web pages and then tried to open it about 20 minutes later. Error message "You cannot open the application Firefox.app because it is not supported on this architecture.
All Replies (1)
Firefox 4 and later versions aren't compatible with PPC, they are Intel only.
http://www.mozilla.com/en-US/firefox/4.0/system-requirements/
For older Macs that aren't supported in Firefox 4.0 & 5.0, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/
http://code.google.com/p/tenfourfox/
Or stick with Firefox 3.6.
http://www.mozilla.com/en-US/firefox/all-older.html