Slime UML 2 runs on Eclipse 3.0 and higher; if you use an older version, check for old Slime UML versions.

To run Slime UML you must have GEF 3.1.1 installed. Please install it from the Eclipse Tools Site.

The first step after installing Slime UML should be to verify the correct installation.

There should be an entry "Slime UML Diagram" as described above.