Has anyone else had issues with the windows client being able to: A) download the blockchain in its entirety, B) not crash every time it attempts to open the wallet, C) be stable for more than 5 minutes at a time?

So far, I've not been able to send any zetacoin to any exchanges because the client continually states that it is unable to open the wallet, yet, it sees the full balance without issue. Any clues as to how to fix this?