Okay so I used listreceivedbyaddress 0 true and that kicked back an address that I successfully used with dumpprivkey to get my private key. I now have one private key and my password but don't know what to do from here. I have tried to import the private key to a separate wallet on blockchain.info but that has not changed my balance. I did not have to input the password that I encrypted the account with. Is there a chance that this is the wrong private key?
If your wallet was encrypted, you need to use walletpassphrase before dumping the keys, the instructions are earlier in the thread.
Check the balance of that address on blocktrail.com (blockchain.info has been buggy and stupid recently).
Try importing the address (and any other that you have) to Electrum. Download and install electrum from
https://electrum.org/#download and create a new wallet. Make sure you select the option to import keys and then just copy and paste all of your keys into the text box. Follow all of the instructions and you should be able to see your balance and spend from it.
