HELP O_O!! Nvidia 3D vision warnning message!!

Hi,
I am using two projectors(not Nvidia 3D vision ready, but Nvidia 3DTV play ready projectors working with 120Hz) and Nvidia-3D-Vision glasses.

But the problem is whenever I play Unity 3D scene and even 3D Vision Wizard, warning message (attempt to run Stereoscopic in non-stereo display mode, please change to a acceptable mode. See documentation for acceptable Stereoscopic 3D modes) comes out. Although it projects 3D stereo images well enough, but the problem is red warning message.

My settings are..
- displays: acer H6510BD
- Nvidia 3D vision kit
- graphic card: quardro k4000
- with HDMI 1.4 cables

Curious thing is that , it works very well without warning message.
- when I run 3D processing files (www.processing.org) with same computer and same projectors
- when I run same 3D Unity demo scene by using a monitor(120Hz) with DVI cable (and with same computer)

Could anyone give me some advice about this matter? I appreciate reply in advance.