Rt as production renderer stops at "waiting for renderer"

V-Ray V-Ray GPU Issues
9

today i have the same issue with vray RT 2.1.

I create an empty scene. I add a cube select Vray RT for production renderer and hit render , but it’s stop at " waiting for renderer "
Active shade work. Back to production renderer it’s not working …

Edit :
I’ve find how to solve this.
Open the Task manager, killing the vrayrt spawner task , killing Vray.exe task. Then after it’s work .