Once you upgrade to Vray Next and reprogram your dongle can you still use Vray 3.x?
Ok, that is strange. It now shows no license available, but V-Ray is active in Max again.
The new License Server is working!
Ok, I found out what my problem was. I had a bookmark for “Manage License Server” for my browser and it had the server IP in the address. This worked for 5.01 an below.
When I use “http://localhost:30304/#/” all licenses show up correctly with the 5.1 license server.
Everything is working as it is supposed to.
Sometimes the web browser cache may create an issue with showung the interface correctly - if that happens a simple clean refresh (Ctrl + F5) helps.