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waltw15244092
Participant
November 29, 2018
Answered

CS install file from unknown source?

  • November 29, 2018
  • 4 replies
  • 1170 views

I have an older version of CS4 installed on my MacBook Pro. I understand that there are problems running some of the CS4 programs on OS Mojave, but Photoshop and Illustrator seem to work fine.

For various reasons I am wanting to backup all my documents, then reinstall all my software. I was able to download the CS4 installation files from the Adobe.com website. However, when I tried to install, I got an error messages saying that the installation files are from an unknown source. So, how is it that files downloaded from Adobe are from an unknown source?

Is there a way to work around this error message?

Thanks for your help!

Walt

    This topic has been closed for replies.
    Correct answer Jeff Arola

    Jeff,

    I've read about hard drives being formatted as case sensitive but I'm not sure how or if that can be changed,

    I hate sounding like such a technical dullard, but is there a step-by-step procedure for changed the hard drive to non case sensitive? Or is it something I've stuck with?

    As I said previously, I want to reinstall Mac OS. How far back do I need to go to install an OS that does not give me the installation problems with CS4. High Sierra or earlier?

    And yes, you have beeb very helpful, Where can I go to give your service a positive rating?

    Walt


    I don't think the hard drive is case sensitive.

    That's the message one gets installing cs4 on High Sierra thru Mojave unless one uses the install procedure outlined under

    Creative Suite 5.5, 5, and 4

    https://helpx.adobe.com/creative-cloud/kb/install-creative-suite-mac-os-sierra.html

    4 replies

    T
    Test Screen Name
    Legend
    December 7, 2018

    You're not stuck with it, but fixing it does wipe everything off the disk and you have to start again with installing the system and getting all your stuff from backups.

    Is this a recent Mac? They don't go back far enough.

    W
    waltw15244092Author
    Participant
    December 7, 2018

    John,

    Back to trying to install CS4 on my Mac running Mojave 10.14. I've been able to download the installation files but run into this error message: "System requirement error—This software cannot be installed because the file system of the setup volume is not supported."

    I have no idea what that means, but I did have a chat with apple support. The tech support person sent me to a utility director that indicated the Mac HD was AFPS. I don't know what that means either, but I would like to get the CS4 install to work.

    Walt Walker

    John T Smith
    Community Expert
    John T SmithCommunity Expert
    Community Expert
    December 7, 2018

    That MAY be related to Case sensitive drive formatting https://forums.adobe.com/thread/2296860

    John Waller
    Community Expert
    John WallerCommunity Expert
    Community Expert
    November 29, 2018

    Does the error say unknown source or unidentified developer?

    Unidentified developer is a message from the macOS Gatekeeper feature since it's looking for a current, signed certificate embedded in the software to protect you from installing malware. CS4 was released before the macOS Gatekeeper feature and its certificate checks existed.

    For a workaround, see How to Allow Apps from Anywhere in macOS Gatekeeper (Mojave, Sierra, High Sierra)

    John T Smith
    Community Expert
    John T SmithCommunity Expert
    Community Expert
    November 29, 2018

    That is because Apple did not maintain backward compatibility with old programs

    CS6 and earlier programs HAVE NOT BEEN TESTED AND WILL NOT BE UPDATED for Mac El Capitan or newer operating systems

    -which means that you try to use CS6 and earlier at YOUR risk of having problems due to Apple updates

    -Apple did not maintain backward compatibility with old programs in El Capitan or newer operating systems

    --Adobe has a workaround to Apple's problem of not maintaining backward compatibility

    --READ HERE https://forums.adobe.com/thread/2301916 for an Adobe solution to installing old programs, including a link to installing the old Java runtime that is required

    --Also read for more information https://forums.adobe.com/thread/2458382

    --and https://helpx.adobe.com/x-productkb/global/install-or-run-applications-new.html

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