Gnana,

VFP sometimes holds classes in it's internal cache, you can CLEAR ALL to get rid of them and allow the class designer to open the class again.

>I have a class library,have been using class(instances)in my form. If I want to modify the class in the class library,sometimes,it gives an error " the class is in use" eventhough my form is closed and classlib is set with out any parameter . The only way I can get around is shutdown foxpro and restart. Is there a way to find the classes in use and release them?