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frankz3047770
Participant
November 21, 2022
Question

The ADP Pro v3 extension could not be loaded because it was not properly signed.

  • November 21, 2022
  • 2 replies
  • 2334 views

My ADP Pro v3 extension couldn't be loaded by Photoshop 2023 24.0.1 on macOS Monterey 12.5.1 (non-M chip). The error message is "The ADP Pro v3 extension could not be loaded because it was not properly signed.". I have followed the Adobe instruction at https://helpx.adobe.com/photoshop/kb/extension-not-properly-signed.html#reinstall-extensions (uninstall and reinstall PS and the extension) but the issue remains. Please help.

Thanks!

 

Frank

2 replies

Participating Frequently
November 26, 2022

I have same problem but same error message in Photoshop 2022. I think its a Monterey problem. Frannk is there an update to plugin ADP v3? I can't see one.

Participating Frequently
November 26, 2022

Interesting the ADP v2 works.

Legend
November 21, 2022

If uninstall and reinstall of the individual extension doesn't fix it, there's another unsigned extension in the directory. So remove all extensions from that folder, then just install ADP Pro. If it works, then re-add the others one by one until you find the offending un-signed extension.

frankz3047770
Participant
November 21, 2022
Thanks, Jeffery!
I did what you said, removed the all extensions. I also reinstalled photoshop and only put ADP Pro extension in the extensions directory. Unfortunately I received the same error message. Any suggestions?
Appreciate your help!

Frank
Cuino1810
Participant
May 24, 2025

It is necessary to copy and paste into the plugins folder. Unfortunately, I lost mine due to my computer crashing, and now I cannot retrieve it as the website has been closed and no downloads are available anymore.