P: Exporting photo with brush mask and overlapping red-eye correction fails with "unknown error"

I think it's best to start a new thread for the problems with export plugins. "Unknown error" encompasses all internal programming errors, and it's almost certainly the case that the error triggered by rendering a brush mask overlapping a red-eye correction is different from that caused by running two plugins after LR has rendered the image.

What is curious is that the behavior people are reporting does not seem perfectly consistent. A couple of people have claimed (and I have no reason to doubt them) that disabling some Freidl plug-ins fixes their issue. But the steps I described above in an earlier post caused the export problem even if all of the Friedl plug-ins are disabled.

These two:

Metadata Wrangler — Control what metadata is/isn't included during any export
Run Any Command — Custom process each image during an export

Of course I had already sent Jeffry the technical logs but didn't reply (which matches the experience of other users).

I suspect that Adobe has changed something in the plugin APIs in recent versions, but I can't prove it.

"the Jeffrey plugin"

He has many plugins -- which one in particular? The error message is generic and has many possible causes, and your problem is likely unrelated to that  of this thread. I recommend you contact Friedl next, since the problem could be caused by the plug-in itself.

Any export with the Jeffrey plugin enabled runs into the render error exactly as described above. As soon as the plugins are deactivated, everything works again. Disabling GPU support doesn't change anything. Error also occurs with simple, unedited images. Please help Adobe!
(Win 11, LR classic 12.1, all plugins up to date)