Try backing up the wallet, and restarting cagecoin-qt.exe with the -salvagewallet option.

For example, open a cmd window, then type

G:\Prenosi Firefox\cagecoin-qt.exe -salvagewallet

Make sure you back up your wallet.dat first, just in case the salvagewallet option doesn't find all of your funds. (If that's the case, you can restore the wallet and try other ways to fix the issue.)