This is not a DevalVR message. It appears to be a message of any DirectX plugin. Some programs have the hability to insert messages in other DirectX applications, for example Fraps http://www.fraps.com/
. You can install Fraps and see the number of FPS in any DirectX application.
I think you have any installed application that interacts with DirectX windows and has an error.
What happens if you select software mode in DevalVR? Choose Debug options->DevalVR software engine