Nope, but I did copy the entire folder, rename the copy, then change the sprites within that folder - and the name of the spriter file (to use with another character). When I opened the copy, the animation was broken, then I opened the original and that was also broken. Is it possible that there is some cache or temporary files on the computer that got messed up buy the duplicate?
I'm using the pro version with Steam on windows 10
Cheers