Okay, so I have these two rooms I need to join into one, and as I understand it the first thing I need to do is enable myself to view rooms through the markers part of the Show/Hide window under the View part of the ribbon.

Problem: Markers won't check. It kind of flickers that its checked, but then unchecks itself. So....I can't see room markers. Anyone had this problem before?

Does anyone know anything about this?

Are you in the showing markers view------(m key depressed)? If you are not, then the options in the show/hide window will be grayed out and not selectable.

Yep, that was it. Thanks!