I shot this using an E-M1 mk II, with a manual lens (with no electrical contact so it’s no recognized by the body).
I can normally edit the pictures in PL since it recognizes the body, but on some occasions it fails to do so.
I have attached one of the RAW files that can’t be read: _B019215.ORF (16.4 MB)
FWIW, I have no problems viewing the image and the EXIF data in PL4 and PL5 on Windows 10. Is there an associated .dop file or XMP file? If yes, can you open the RAW image in a new folder that only has the RAW file?
It’s probably a database or cache problem, then. You can rename the entire folder and have PhotoLab read it again - or even delete the whole database if your image adjustments are also being stored in sidecar files. I wonder if there are other solutions - but it seems we don’t know the cause of the problem.