I may have an idea...
When you had your markings, did you accidentaly delete the cfg. file when you were installing, moving, or cleaning out something?
The cfg. file is what basicly allows the markings in game. No cfg. No markings.
I would recommend checking that then re-installing the markings.
Also, if you have moved the markings to some wierd foriegn file they shouldn't go in, I recommend taking them out.
That may be causing them to bug up and what not.