Nope,
somehow or another the Vista default, and arrow buttons were missing from the Vista subs, perhaps some odd error when making the 7 substyles, anyway, had to re-add them in SKS from the dropdown, and everything is fine now.
Doesnt make any sense why they would have been deleted, nor does it make sense that this only affected some systems.
All fine now tho.... just a quirky WB thing I guess.