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.
An Intelligent fool can make things bigger and more complex... It takes a touch of a genius -and a lot of courage- to move in the opposite direction".
-Albert Einstein