Thank you very much for your reply. No AddToWallet or proof-of-work-found
In that case, you probably did mine, but you probably didn't solve any blocks, so (unless you bought or traded LTC) your wallet probably wasn't funded.
That being said, it doesn't hurt to hold on to a couple of copy's of your wallet.dat... If you can open said wallet, you can always try to get a list of addresses and verify if they are unfunded using a blockchain explorer. Don't get your hopes up tough...