Can you export one of the old images that worked before?
… as well as share one of the .jpgs that gives you problems?
Thanks to all for the responses. Edited JPGs from the camera are now exporting without issues (to the same folder as before). I have no clue why it’s working today but not yesterday. I have not changed any settings in the camera or in Darktable!
Do you have by any chance any syncing software or any other stuff running that may block your folder?
pitbuster,
I’m not aware of anything, but thank you for the suggestion. Next time it happens, I will have a look in Task Manager and see what else is running, besides Darktable.