I can't sync the wallet, it always exits with an "Unknown Error". Any advice?
I deleted the data folder, tried again multiple times.
Recently it got past block 50000 but then the error occured again.

Your AppData/Dubaicoin must be removed and installed again.
1.Back up and save your keystore form AppData/Dubaicoin
2.Remove AppData/Dubaicoin (delete whole folder)
3.Open bin/gdbix.exe form wallet 2.2 and leave full sync
4.Get back your keystore file in AppData/Dubaicoin which is just created
4.After sync is finished, open dbixwall.exe and your wallet is ready.
Give feedback is everything ok.
Thanks