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FF4 will not open after download... "you can't open the application "firfox" because it is not supported on this application." If 4 doesn't work on OS 10.5.8, then how do I get the old firfox back?

brhankins
brhankins
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I downloaded the FF4 update and it has the "no smoking" symbol over the FF icon. When you attempt to open the app it states: "you can't open the application "firfox" because it is not supported on this application."

I have OS 10.5.8 If it will not work, how do I get the old version of FF back?

I downloaded the FF4 update and it has the "no smoking" symbol over the FF icon. When you attempt to open the app it states: "you can't open the application "firfox" because it is not supported on this application." I have OS 10.5.8 If it will not work, how do I get the old version of FF back?

All Replies (3)

samadams
samadams
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Are you sure you downloaded the .dmg file? It should have automounted for you and opened in finder. Then all you have to do is drag the FF4 icon over the Applications link in that finder window and it will install.

I seem to recall seeing the error you noted when I accidentally clicked a windows .exe file on my Mac.

Also, if you visit firefox.com from your Mac, it should be prompting you to download the .dmg anyway. The only way you could get the .exe would be to click the "other operating systems" link below the main download button.

brhankins
brhankins Question owner
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I am for sure using the mac version... I have a Power PC G5 with OS 10.5.8 and 2GB of Ram. It should work right?

I followed the instructions exactly. For some reason it is not compatible. How can I get the old version of FF back?

the-edmeister
the-edmeister
  • Moderator
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http://www.mozilla.com/en-US/firefox/4.0/system-requirements/

Mac Operating Systems

  • Mac OS X 10.5
  • Mac OS X 10.6

Recommended Hardware

  • Macintosh computer with an Intel x86 processor
  • 512 MB of RAM
  • 200 MB hard drive space

For older Macs that aren't supported in Firefox 4.0, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/

Or you can get Firefox 3.6.17 here:
http://www.mozilla.com/en-US/firefox/all-older.html