Help with an Android keystore problem.

Okay, so I built one of my apps a while ago for Google Play. When I went to update it, it told me that I could not due to the keystore not matching. I only had one relating to this app, so I am puzzled as to why it would say this. Is there anyway to figure out which keystore key was used? I may be possible that I accidentally used one for one of my other apps when I built it.

Thanks,
Scott [import]uid: 79834 topic_id: 31127 reply_id: 331127[/import]