Most issues with the PS and LR plugins will be resolved if you just run the Qimage installer again.  No need to uninstall first: just run whatever installer you have (or download the latest).

Let me know if that doesn't cover the problem.

Regards,
Mike

No issues when testing on multiple machines.

Latest Lightroom Classic 14.4.

There have been no changes to the Lightroom plug-in.  The error you are getting is usually a permissions error either caused by trying to install Qimage as administrator and later using it on a limited account... or by anti-virus software interference.  The only other thing I can think of is to temporarily disable your anti-virus to see if the problem goes away and if it does, use an exclusion.

Regards,
Mike

I've been developing Qimage for 28 years and I see anti-virus interference on occasion, especially from poorly written AV programs (PrevX, BitDefender, and Norton come to mind!).  Windows Defender is not a problem so if that's all you have, it isn't that.

And yes, like I said, I did make something of your message: that usually appears when the plug-in is trying to access a file and can't for some reason, hence what I suggested.

You didn't mention it so I'll assume you didn't make the mistake I pointed out: installing under an administrator account and then switching to a different account to run Qimage.  The only other thing that I can suggest is uninstalling and reinstalling Lightroom, then reinstalling Qimage so it will renew the plug-in.

Mike