Desperate, Since C2 files are text files, you can obviously modify anything you wish... if you fully understand the stuff. There is too much to explain, but essentially, various data structures in the file "point" to each other. Some structures are general classes, others are instances of those classes. If you find a pointer (name) in one of your instances, for instance (no pun), and find no corresponding class definition, then you have found a nil poiner... it points to nothing. This is so general as to be useless. Much study of the data structures is required to successfully modify the text files. Good luck, Jeff