Thanks. That did the trick. And I had not downloaded Tomcat, so that explained that problem. Now I am trying to start it up. The problem is that the download gave me the file essentialinstall.jar, with no other files. The install seemed to work ok, but I didn't get any sort of "Essential" ...

I am in the process of trying to install the Essential Architecture Manager. At the point where it tries to identify the location of Protege, I browse and give it the directory of the folder where the software is held (which in my case is: C:\A Programs\Protege 4.0). For my troubles, I get the messa...