Head scratcher.
Button view switcher isnt working on my 600. If I do a "delete all data" off my 600, then it works. I looked at the optioning in calendar on the clean version and from all I can tell, I have made it the same after I do a restore - but I cant get button view switching to work. Other than checking the different button view choices, I cant find any other optioning that effects this capability.
I have a good amount of 3rd party software installed.