Recently I encountered the following error when trying to remove the URL for a project workspace in PS07. The situation was I took a backup of the four PS07 databases, restored them to a new instance of PS07. since the projects still had the links to the previous workspaces, I wanted to remove them and create new workspaces. When I tried to remove the URL I would receive the message “The information is not complete. If you want to change the site address, provide both the server and the complete site path: /sitecollection/subsite”. A workaround is to associate the project with a different existing Project Workspace. Once this is done you can successfully remove the URL.