Plugin Studio

I an desperately trying to make a Custom Plugin for modifying custom attributes of user.

How ever whenever I go to iManager | Configure | Role Based Services - I do not see the Plugin Studio option that I would expect after reading the documentation...

I do see the "Some roles and tasks are not available" warning, and via View Details I am able to see Plugin Studio is not available because "RBS is not currently installed in this tree"

I have run the RBS Configuration Wizard and rebooted the server. I can see the RBS Collection, but the box keeps telling me I don't have RBS installed in the tree.

Whenever I try to Edit the RBS Collection, I get an warning "Either the RBS schema definitions have not been installed or they are out of date. Slect OK to extend the schema and continue."
I press OK and I can edit the Collection, but after a restart I still do not see the Plugin studio.

Why is this so damn hard? And what does the Plugin Studio have to do with RBS anyway?

I am running iManager 2.7.4 on OES2sp3 on SLES.

Bob