What version of routerOS do your run?
Its a change in how to make VLAN from ver 6.41
See my post here:
http://forum.mikrotik.com/t/sofware-vlan-bridge-on-ruteros-explained/122534/1
The last post show a working configuration.
You have old software Bridge <6.41
new software bridge >= 6.41 with vlan support in bridges.
And some MT devices support switch chip.