Hi all, I have a simple zclass with a propertysheet and three Base Classes: ZObject, CatalogAwareBase, _ZClass_for_MSWordDocument. I have modified the add_Form for the input of my properties and I have set up the Properties view to propertySheets/myZclass/manage. When I add a new zclass object all works but when I select it, go to the right-hand frame of the management interface and click on a tab (the view tab, the properties tab...) the browser (Ie 5.00.29) open a new window. Someone can explain me why ? I use Zope 2.3.3 and Win2k. Excused my bad english and thanks. Michele