Loading Failed

Cannot load game. If the file is damaged you have to use a backup.

I used the backup file again the same. I've copied the file from another PC which it works. I'm trying to run but always getting this error.

i had the same issue, when i was moving from version 4.2.5 to the new 5.0. i could load an older version of my files, though. the problem was that i still had the free-version installed. 

Yeap was that! Thank you