We currently use the Nightly build that was made available one year ago :
V-Ray for Maya version 2.25.01, revision 23639 from Sep 24 2013
V-Ray: V-Ray core version is 2.00.02
We are going to upgrade to v3.0 soon, our reseller tells us he will provide a license that works for our current v2.x for 6 months, along with v3.0
I would like to be sure that the v2 build that we use will work with that temporary licence.
(because I have heard stuff about special build that we would have to install to make it compatible, but we would like to avoid that)
V-Ray 3.x come with a new version of the License Server which requires updated Wibukey drivers installed.
You should update both V-Ray License Server and Wibu-drivers in order to use V-Ray 3.x license.
The new version of the License Server comes with the V-Ray installation.
Wibu drivers could be downloaded from here: