Yes, the lack of an additive keyword could also be the culprit. Thats why I suggested a breakpoint on the expression Set("classlib").

>this may be right but have in mind that if you issue the command
>"set classlib to" and specify any other class library this will reset your class library and close any previous loaded class library, now if you use the ADITIVE keyword after the name of your class library this will keep any previous library loaded. You may che for your SET CLASSLIB commands and see if Additive key word is added at the end of the line.