Oh sorry to hear that!
Seem a bug form the previous version caused that. There was likely s double spend tx (caused by a bug) which made your withdrawal invalid.
If you resync that invalid tx should get cleaned out.
Could you try to follow the steps described here?
https://forum.bitsquare.io/t/blockstoreexception-corrupted-spvchain-file/1689
Just delete the spvchain file then restart, wait until all is resynced (that can take a bit) and then restart again. then the balance should be correct and you should be able to withdraw.
If you still have issues ping me here or by email.