Help: CocosStudio blank screen

I installed on win7 32 bit:

  1. Visual C++ 2010
  2. .Net framework 4
  3. Access Database Engine
  4. CocoStudio_V1.3.0.0

    Run CocosStudio (Animation editor). On Main render tab is always blank, load template or create a new project are the same.
    VGA driver installed correctly. How to fix it?
    Many thanks

Any idea about this?
I have the same problem on a virtualbox windows 7 system.

BR.