Hi, > How could I detect the running Zope version inside a product? There is a varible in the REQUEST object: SERVER_SOFTWARE. In my case it is: "Zope/(Zope 2.5.1 (binary release, python 2.1, linux2-x86), python 2.1.3, linux2) ZServer/1.1b1" You have to do some strings operations in order to get it. Regards, Josef.