>Hi Fred,
>
>I just want to close this off with you...
>
>It seems that the problem is contained to the single class I need in the classlib - other classes in the same classlib work flawlessly under the same circumstances!
>
>Still don't know what exactly is wrong with that class, but I'm going to re-build it and see if that does it for me.
>
>Thanks for your help.
>Jim

I'd suggest you look at the CLASSLOC field. It may not be pointing to where it should be. If it's not that, it may be somewhere in its inheritance chain thats not right.