Error in Scene on Startup

Ok, when I start jMonkey up, I get a Error in Scene Message(java.lang.IllegalArgumentException). And to add to the frustration, I can’t use SceneComposer, etc…

Here is a screenshot:

Yeah got this one too, it’s the Welcome Screen that fails and prevent the Scene Composer to work.

go in tools/plugins, look in the list of installed plugins for “Welcome Screen…” and disable it.

It should work fine once you restart JMP.