VSTbridge Not working with 64 bit plugs

Am I wrong in assuming that the VSTbridge is not required for 64 bit plugs?

for some reason cubase is hanging everything I try to load a 64bit UAD plug in either an insert or send slot or when creating an FX channel …

cubase either freezes or I get the ‘VSTbridge has lost connection’ message!

I have trashed the prefs but with no luck.

why would this suddenly start to happen as they worked fine in 6.5 … I have updated to 7.1 but with no luck either!

VSTBridge is only for 32 but vst(i) plugs in an 64 bit OS environment, 64 bit plugins work as is (native).