Hi Nathan, "A Single-user license is assigned to one person and can only be used by the registered user. That individual can install the license on any computer he or she is using, but only one computer can run SketchUp Pro at a particular time." If you cannot find your original license (to enter it into your second computer), you can retrieve it here (use he same email address your license was issued to). Sorry but I have no idea about V-ray licensing...