I recently had to reinstall Rhino 5 on my PC, and now when I attempt to open the 64-bit application it closes suddenly as soon as it opens. My machine has a 64-bit operating system, so I don’t know why the problem only occurs when opening the 64-bit version. I have tried opening Rhino (64-bit) in Safe Mode, but the problem remains. I have tried disabling all plugins that do not ship with Rhino (Grasshopper, Vray, Weaverbird) but this doesn’t work either. Does anybody know what could be wrong?