Sounds like that could be it !!!
If it is, then an instant purchase might be possible 
Is the license for Cebas products still served by IPClamp ? Is it possible to transfer the license from one PC to another myself ? For some (hard to explain) reason I can not touch the server that serves licenses for 3 weeks, so I need to install the license (incl. IP-Clamp) on my workstation and later on it must be transfered to the license server !!
PS…another question: when I use the PSD-Multimattes can I use the *.XXX file format in the renderelements setup to prevent VRay from saving the renderelements to files or is there another way to prevent the unnecessary files ?