What PC do you have that you've got these errors?
Windows 7 Pro 32 bit and Windows 8.1 64 bit. Same errors on both. I've deleted everything but the key files, redownloaded and resynced everything, but still no access to my coins and no trusted downloads for older wallets. I only opened the wallet after weeks of not using it, because I wanted to buy more. I'm not doing that until there's a working wallet.
Sorry to hear you've got a problem with your wallet.
I use Mac but going to use Win 7 64bit after I would get a new monitor as the old one was broken.
(btw I don't like Win 8 )