>Hi,
>
>when rebuilding my VFP9SP2 project, the builder is looking for a non existing class. Error: Unable to find Visual Class Library. Via Debugout windo I noticed the name of the mystery class.
>Is there a way to find also where when this class is called in my code, as it is aperently a mistake which needs to be corrected.

Try to clean up your project. Sometime that helps with those oddball errors.