HOWTO fix Photoshop’s missing Application Support files error

Sometimes you launch Photoshop and get this error:
One or more files in the Adobe Application Support folder, necessary for running Photoshop, are missing. Please run the Photoshop installer and re-install Photoshop.

This is the dialog of four lies:
Lie #1: A file is missing.
Lie #2. The file is missing from the Application Support folder.
Lie #3: The file is necessary to run Photoshop.
Lie #4: You need to re-install Photoshop to file the problem.

The problem is that /Library/ScriptingAdditions/Adobe Unit Types.osax isn’t loading. It’s possible the file is actually missing, but it’s more likely that you’ve upgraded to Snow Leopard.

Snow Leopard requires 64-bit versions of every plug-in, including OSAXes. The version of Adobe Unit Types that shipped with CS3 and CS4 is 32-bit.

To fix this, download the 64-bit version of Adobe Unit Types, drag it to your ScriptingAdditions folder and launch Photoshop. Problem solved.

64 Responses to HOWTO fix Photoshop’s missing Application Support files error

  1. Cliff says:

    Brilliant was about to reinstall


  2. Vadon Zsolt says:

    Thanks Thanks THANKS!!! I tried to resolve this annoying error message in some differect ways, like reinstall, but error messages always comes up, to this point. Finally with your help I can work now!!!! Thanks really, you are my hero!

  3. This was a much welcomed piece of help.

    I managed to delete the unit types file as a customers system had cs6 and cs4 on it, upon removing cs4 (and doing so carefulyy i thought!) it killed the unit types files and deleted them.

    Luckily I had another machine with both on and got the files retrieved, thanks to your hint.

    Thank YOU!!!!

  4. Collin Deurance says:

    Er, I did exactly as you siad, but the problem still persists! I’m running Mavericks on 24″ iMac.

  5. Luc Alexander says:

    Same as Collin. I work with CS6, uninstalled CS4 to make space and of a sudden that message starts to appear. Got and replaced Adobe Unit Types.osax but the message still comes up every time I open Photoshop CS6.

  6. Luc Alexander says:

    Oh, and I have Yosemite 10.10.4 on an iMac Retina 5K, 27-inch, Late 2014.

  7. Joe says:

    Thank you so much!!! Fixed everything. Somehow the folder got deleted when I used Appcleaner to uninstall one of the applications in my CS6 suite. Just recreated the ScriptingAdditions folder under /Library/. and added the Adobe Unit Types.osax file you provided. Thank you!!!

  8. Bill says:

    YES!!! It worked. Running Photoshop CS5 on El Capitan. THANKS!

  9. M says:

    With Yosemite it is the solution, CS4 runs again. Thank you so much!

  10. Chris says:

    I download the 64-bit version of Adobe Unit Types, and dragged it to the ScriptingAdditions folder and launch Photoshop. Worked prefect. Thanks.

  11. David says:

    This solved the problem – thanks for sharing!

  12. Gratefuluser says:

    You are a incredible. I been searching for this folder and its been evading me thanks for the file!

  13. Martin says:

    OMG, thank you! Fantastic! I hat Adobe and their new subscription-based system.

  14. Denis says:

    Thank you. Works great on 10.13 for CS6

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