First of all, I already tried replacing all the .dat file in AppData/Roaming/Tixati with previous versions, even with some older version i restored using Recuva. Every solution suggested in the forum didn't worked, upgrading Tixati worked for let it start again, but i lost all my configs and transfer history.

I already know why Tixati crashed, it was caused by an Hard Disk having some major problem, i'm replacing it, so i was moving all my old torrents to another disk using the Tixati function for move them, but the Hard Disk stopped working in the middle (some sector ruined i suppose) and Tixati just sopped working. I could not even force quit the application, i had to restart the PC, but while restarting Tixati every .dat file was damaged, and replacing them didn't work. I have a massive amount of torrents and my problem is that many of them were there to seed (private trackers), I can't just simply download them again, and i have no idea how to have my transfer history back again.

I think the "corruption" is linked to the files i was moving, i would have loved to try edit manually the core2.dat file, but it's somehow encoded so I was unable to try this workaround.

Any suggestion is appreciated, I love Tixati and I would love to solve this without restarting from the ground.