You can try an iisreset and also double check that you changed the right web.config file.
Also, this change has to be performed on all your WFE servers.
RE: SP2010 Tabbed "Quest Web Part" picker – can it be hidden?
You can try an iisreset and also double check that you changed the right web.config file.
Also, this change has to be performed on all your WFE servers.