Yep, am on Linux Mint. Was moving away from Windows and was happy with the experience. I am not a computer whizz kid, and this has me stumped. My photos are kept on two separate hard drives, and the issue is the same when I access from either disc.
Not sure what that means but maybe it is not a Darktable issue.
I can access the images, I just can't do anything with them.
If I reload Darktable, perhaps that would at least confirm where the problem really lies.
Thank you for your responce.