The properties in question are read-only because they simply evaluate the contents of another object, so RaisePropertyChanged wasn't getting called. I added some functionality to call RaisePropertyChanged, but that didn't have any affect.
".45 ACP - because shooting twice is just silly" - JSOP, 2010 ----- You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010 ----- "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass." - Dale Earnhardt, 1997