Photoshop 12.1 not working on Mountain Lion (MacOS 10.8)

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Hi I have just installed and reinstalled Photoshop 5.1 from the Adobe CS 5.5 Premium Suite and the App shows a "do not" symbol. When I launch it a message comes up saying that "it does not work with this Mac"? I have a Core 2 Duo MacBook Pro running Mountain Lion with 8GB of RAM. Any ideas?
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Marco Marchant

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Posted 6 years ago

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Marco Marchant

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Don't worry...solved it. After the 3rd install. It may have been looking at some old preferences.

Cheers,
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Chris Cox

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Photoshop preferences wouldn't have prevented launch like that.
But if you had it set to launch in 32 bit, then updated the OS, the OS remembers that setting but doesn't offer a way to remove it. Apple is aware of that issue.
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Marco Marchant

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Thanks Chris. Don't really know. I know I uninstalled all of CS3 then did a PRAM reset and reinstalled Photoshop 5.1 and it worked. I also got Onyx to delete some font caches since I read somewhere about some font issues. I had Mountain Lion installed prior to installing CS 5.5 Premium. Indesign 5.5 worked fine tough.
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Marco Marchant

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Aha, I noticed that the installer installed the 32 Bit Apps for some reason. Indesign is still 32Bit but still runs. So would it have had to do with the the older CS3 installation?
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Chris Cox

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No, but if you installed CS5 and ran it as 32 bit before installing 10.8, that would have caused problems.
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Marco Marchant

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Hmmm, strange. I don't know why the CS 5.5 installer chose 32bit instead of 64bit. I didn't see any options to change that. I thought it would look at the specs of the system and install accordingly.
Anyway, I now need to reinstall the other ones that installed as 32 bit.
thanks for the feedback.
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Chris Cox

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The installer wouldn't, that's something that the user has to select the application and change - but the OS remembers that setting in a plist.