[Zope] Product not registering?

Hello, I am trying to create a new python product that builds on a previous product. I am doing the following: install product "Foo" Foo installs correctly. cp -r lib/python/Products/Foo lib/python/Products/Bar cd lib/python/Products/Bar search and replace "Foo", "Bar" rename Foo.py Bar.py, etc restart Zope, no errors Now, the drop-down box for adding objects includes object "Bar", but the installed prducts screen does not list Bar as an installed product, so adding Bar fails. Any help? Thanks, VL