Vst Bridge Problem x64

Hi there! I have Cubase 6.5.1 x64 bit and use a lot of dsp cards - 2x powercore & UAD2-quad. My system is Windows 7 Home Premium SP1 x64.
As all plugins are 32bit cubase uses it`s own vst bridge.
But after loading 50% of UAD plugins and 70% of Powercore in attempt to open the next plug-in everything hangs.
The sound on the former still goes but Cubase doesn’t react to one pressing.