Just to make sure I’m not seeing or imagining things, as I’ve already told you, the playback of Blu-ray 3D movies may be a bit of an issue on your PC with a 120Hz 3D capable LCD monitor using 3D Vision, because these displays are HDCP compliant only at 60Hz. This means that you need to remove the HDCP protection in order to watch these movies without issues, otherwise here is what you get…
PowerDVD 10 Ultra Mark II may or may not start to play the 3D movie for a few seconds than it may stop either with blank screen or return to a window mode in 2D and display the error message that your display is not HDCP compatible.
Total Media Theatre 3 Platinum + Sim3D plugin also may start to play the 3D video for a few seconds or directly display the above error message regarding the display not being HDCP compliant.
The above two pictures show what you get when trying to play Monsters vs Aliens 3D (sold as a bundle with hardware) and Grand Canyon Adventure (sold separately) Blu-ray 3D movies (original discs) on Samsung 2233RZ monitor with 3D Vision. These are the only two Blu-ray 3D movies that I currently have to test with, but pretty much all 3D movies (if not specifically with removed HDCP protection should behave the same), unless you have something active to remove the HDCP protection in real-time like AnyDVD for example as I’ve already mentioned a few days ago. It is possible that the second generation 120Hz LCD monitors from Alienware, Acer, Asus and LG might not be affected with the HDCP issue like the first generation ones from Samsung and ViewSonic, but currently I cannot confirm that as currently I don’t have any of them to try with.