If you're seeing a black screen when you're trying to load a VST, try making sure your graphics card drivers are up to date.
Automatically update AMD Graphics Drivers
Automatically update NVIDIA Graphics Drivers
If this doesn't solve your issue, try downloading and installing OCTANE with no OpenGL from here:
If none of these work, let us know and we'll process a refund for you. We are currently looking into a solution for this.