When getting back to a scan that already had been converted with NLP 1.3 I very often can’t reconvert and get back that error message. Tried with several scans and also on another Lr Installation on my MacBook. Files were made with Vuescan on a Reflecta RPS10M. Tried to reinstall NLP but no luck so far.
No problems with new scans. Seems to be, some of the old NLP-related metadata is written in the file that causes trouble?!
Update 20JUN2019: Error occurs also with scans I did yesterday in ver 2.0. So no chance to unconvert to change e.g. the colour model. Getting that above mentioned error when reconverting. Using virtual copy of that file doesn’t help either.
Profile gets applied as expected, histogram doesn’t look strange to my eye.
As a sidenote: I usually use exiftool (Capture Time to Exif plugin within Lr) to change dates and save that (new) metadata back to the file by hitting cmd+s. May that cause trouble with NLPs metadata?
If of interest, I can send you a scan, just to check, wether my problem is file-related or due to some weird Lr stuff going on on my machine.
Ok, thanks… I see the issue… the issue is those brackets [] in the filename. The image processor thinks this is a special kind of command. I’ll issue a patch to fix this. In the meantime, you should be able to get it to work by renaming the file to something without brackets or any other special characters.