#Error on new install
1 messages · Page 1 of 1 (latest)
(this is a very uneducated guess based on the error message you're getting)
It seems like your save file accidentally got written to twice, aka it has 2 saves in a single save file, which the game can't handle.
Try deleting your save file at %appdata%/Balatro/1/save.jkr and re-verifying the game files.
If that doesn't work you can also try deleting the entire folder at %appdata%/Balatro and re-verifying the files.