WinZec not working with deamon is taking longer than expected to start

My WinZec just suddenly stopped working with error showed that deamon is taking longer than expected to start.
I tried to reinstall WinZec and redownload the whole blockchain data. After I switching my old wallet file into the folder the error poped out again. I need help!!! It works when I removed my wallet and switch back to the new wallet which is generated automatically.

it changes my old wallet file to a BAK file.