Are all of your transactions from the end of 2013/early 2014?

It's possible that you were mining one of the many forks that developed in the early weeks after CAT launched.  The founder launched the coin at a very low difficulty and used the same difficulty adjustment as BTC.  There was a LOT of hash on the coin at launch and more than one million CAT were mined in the first weeks - and there were a lot of forks.  Do you remember how you mined your coins?