I call a lookup form from either the menu or from another form. The lookup form is normally modeless.

When I the lookup form from another form, I set the windowtype=1 and make the lookup form model. This method has been working fine, but today for some reason when it calls the lookup form, VFP comes back with a "this property is readonly" error message.

The form is not displayed yet and has not be called by any other procedure prior to this error. I set the windowtype in the forms init method.

Any advise would be greatly appreciated.