Going to the PlugInSelector
and removing EXIF
then allowed to export to NC4 → DFine2 (still the old software)
Just yesterday I experienced …
My cam is a supported Lumix DMC-LX100. While I could export from PL5 to TIFF / NC4… and open that tif-file in PS, manipulate and even print, I could not save – neither as tif, as copy or as psd-file.
→ Excluding all metadata – didn’t check which one like with your example – solved the problem
(and also before, when I had opened / saved that tif-file in AffinityPhoto).
BTW, no problem with files from my Nikon D750.