>>>What else might I check for?
>>>
>>Hilmar,
>>
>>I would suspect that the classlib is already open when the command is issued. A classlib is simply a DBF with a different extension so the alias name is in use error makes full sense if the class lib ius already open with that alias and you try to open it again.
>
>Indeed, it is. But it is my understanding that Visual FoxPro should check whether the classlib is already open, before adding it to the list. Çetin gives a possible cause (two classlibs with the same name, in different folder). I had suspected that too, but that doesn't seem to be the case.

Hilmar,

have you tested SET('Classlib') against the lib to set (complete path, jusstem(), alias if specified )?

Try also to run through all Datasessions and test agains ALIAS (against jusstem(), alias of the lib) as well as DBF (complete path of the lib)

Agnes