Black slots in material editor (2008)

[Fabrice]

Suddendly all the slot of the material editor went black.
I tried to reboot everything.
The slot are ok when in Scanline mode but they all turn black whne choosing Vray render.
(Using 2008 + 1.50sp3a)

[pskdude]

umm

that usually happens when your license server isnt launched. Doesnt see Vray so the vraymats become black.

[vlado]

Another possibility may be that you have unlocked the material editor renderer from the production renderer.

Best regards,
Vlado

[Fabrice]

The problem disappear when I shut down another (rendering only) PC rendering aside.
There was certainely a license conflict between them.
It's strange because the main license was running
and I was able to edit Vray rendering param
but not to see VRaymat...