183567 De Code (deZend?) a script

I bought a script from two different resellers and it is encoded. I think it is Zen. It requires ioncube if that helps to tell you if it is Zen or not. The script creates an error. I am told that the error can not be fixed because it is encoded and the originator of the script is no longer available. I would like someone to fix the script and make sure it works on my server.