Cubase Used to work perfect for me with VST Instruments, but now whenver I try to load up a VST, it tells me No Mixer Channels Available, and will no longer allow me to load any VST Instruments. Do I have a bug in my system, or do I need to fix some settings? I tried upgrading from Cubase 5.0 to 5.1 and it still says the same thing. Any help would be greatly appreciated, thank you.