Hecky have you removed all traces of your old VNX2 and VNX installs? Nikon has a tool for doing this. You may have some crud left in your Registry that is causing conflicts. What is happening with VNX2 to make you say it is not running properly? Does the built in Transfer program work? Are the files loading slow? I too use VNX2 to browse my images before I move them to CNX2. I am running CEP 3.0 and have installed the patch to work with CNX2 64 bit. Again no issues.