heres something I can repeat.
Make a single button bar for each spec. Put a button on that bar that is spec specific, ie the other spec cant do that ability.
Go to edit mode and just turn dual spec mode off then on again. When I turn it on again the button just disappears. I tested this 3 times.
this is with a new WTF folder and I followed the directions found here
http://www.wowinterface.com/forums/s...ad.php?t=37520
IE
Make sure the only Macaroon modules you have installed, and loading are some or all of the following:
Macaroon! (now also including Extensions)
Macaroon: Alerts (Previously Loot)
Macaroon: Status Bars (previously XP, and CB)
Macaroon: Xtras
Macaroon: Spell & macro binder
Macaroon: Totembar (previously MultiCast)