Hi
I have similar problem. I did try to check-in things in steps like suggested. It has no effect. Even when I don't select the files in question Plastic Complains.
Three images show the sequence:
I do not mark the files in question for check-in
I click check-in, and get the attached error
The missing files are now ticked off in the check-in window.
After looking at this more, the added ticks for non existing files only happens when I try to check in a change to the same files it can't find from their new folder.
Is there a way to make plastic forget about the old names of these folders?