If I try to copy an object, I get this message: "cannot change old file (file saved with @)". Googling, I see several people getting this message in a variety of circumstances, but none on copying an object.
There are plenty of files with "@" in their name on my system, but no .blend@ files.
The blender animation is created from scratch, no import or such things.
I'm on OpenSuse Tumbleweed; Blender version 2.80.
Any help appreciated!