I've been running Bitcoin-QT for months without a problem. However, as of yesterday I get an error when I try to start up the program. A few days prior I got the error (or a similar one) as well, however, the wallet still opened. Now it crashes. I'm on a Mac. Additionally, I was running low on disk space when I first started getting the errors but just kept deleting things. Also, I *might* have been unable to open it only once force quitting, but I'm not sure.

This is the error I get:

"Warning: error reading wallet.dat! All keys read correctly, but transaction data or address book entries might be missing or incorrect."

I get this whist it says "Loading Wallet"

It then crashes if I click okay, and I get an option to report, saying it quit unexpectedly.

I've tried re-downloading Bitcoin-qt with no luck. I'm a newbie with the software side of bitcoin. Please help me out here - I've done some googling but I'm not sure what else to try. Can my balance be recovered?

Thanks in advanced.