I have NOT done any kind of system restore (don't have the hard drive space for that)
The multibit application won't open. I tried installing the latest version, didn't seem to do anything.
I've updated Java and rebooted. Didn't help.
It's been many months since I've even looked at my BTC. I can't even remember what a wallet is supposed to look like... Can someone confirm it should be called saving.wallet? That's my impression from their site but a search of my PC shows no such file?