When I tried to open the view UNIX/Linux Computers in the Administration pane of a SCOM 2012x environment, I got this error:
After some searching on the internet I found this article written by Gustavo Méndez. He had experienced the same issue and solved it. The same posting tells exactly what caused it, and even better, how to solve it.
All credits go to Gustavo Méndez. Thanks for sharing.