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I have used Firefox for a long time, I downloaded version 4.0 and now I get a messages that says "you cannont use the application "FIrefox" with this version of Mac OS X (10.4.11) and version 3.6 will not download! Any ideas? in English

  • 4 replies
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  • Last reply by dynamite

abeat
abeat
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After I downloaded Firefox 4.0 I received the following message: You cannot use this application "Firefox" with this version of Mac OS X. I have been using Firefox for a few years on this computer.

I tried to reload version 3.6 but the same message now pops up and won't let me use Firefox at all. I'd like to go back to 3.6, but can't even do that now!

After I downloaded Firefox 4.0 I received the following message: You cannot use this application "Firefox" with this version of Mac OS X. I have been using Firefox for a few years on this computer. I tried to reload version 3.6 but the same message now pops up and won't let me use Firefox at all. I'd like to go back to 3.6, but can't even do that now!

Chosen solution

Unfortunately, Firefox 4 supports only Mac OS X 10.5 and above on Intel hardware. The system that you are currently using is no longer supported by Firefox (details can be found here).

You should revert back to previous version (3.6.16) of Firefox by following these steps:

  1. Open the Applications folder.
  2. Drag the Firefox application to the Trash.
  3. Download and install Firefox 3.6 from here.
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All Replies (4)

dynamite
dynamite
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Chosen Solution

Unfortunately, Firefox 4 supports only Mac OS X 10.5 and above on Intel hardware. The system that you are currently using is no longer supported by Firefox (details can be found here).

You should revert back to previous version (3.6.16) of Firefox by following these steps:

  1. Open the Applications folder.
  2. Drag the Firefox application to the Trash.
  3. Download and install Firefox 3.6 from here.
abeat
abeat Question owner
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THANK YOU, DYNAMITE! It works beautifully now.

Anne

lnzd
lnzd
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I have Firefox 3.6.6, and now that Firefox 4.0 is available, it crashes constantly. Sometimes less than 5 minutes after I open it. I have a Mac 10.4.11, so Firefox 4.0 isn't an option for me. When I asked Ff to check my plug-ins it said there was an error and to check back later. Twice.

Because I didn't have any (any) problems with my Ff before the upgrade became available, I am forced to question if Ff has done something to make the earlier version crash so you'll upgrade, but I can't afford to upgrade my Mac right now.

In the meantime, I do need a browser that works! I dislike Safari, Chrome is also not available on Mac 10.4.11, and Explorer is just plain not available on Mac.

Do you have any suggestions on how to fix my Firefox 3.6.6?

Ty

dynamite
dynamite
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@Inzd, Firefox has done nothing to cause crashes in previous versions. Most probably, it is due to an add-on.
Please check if the solutions given in this article help: Troubleshoot Firefox crashes (closing or quitting unexpectedly).

As an alternative, you can install another browser called TenFourFox from here since it works on Mac 10.4: http://www.floodgap.com/software/tenfourfox.