Hi Catherine,
You are a genius!!!, actually thanks to that i found the issue, i was having the cache in my external drive, my external drive changed letter, thats why it doesnt work, thank you!!!!! as a suggestion perhaps if the system could throw an error like, cache folder not found or something ...

Hi am getting this Error Code 100008, updated the latest DNG converter according to the previous post from 2018 from this error code on mac, using latest version of helicon, nvidia drivers updated to the latest version to date.
can find the problem, stacking works, problem occurs only on saving ...