If i set the playback player in the Preferences of Premiere CS5.5 to CFRTplayer the viewer in the Project Window does not play correct.
The viewer stays stationary on the first frame and the actual clip is playing in the left top corner.
This does not happen with the Adobe Player.
The CF avi's are rendered from AE.
Nvidia gtx285 266.58 driver.

I'm running CS 5.5, Win 7 x64, nVidia GTX 580 w/266.71, Neo 3D Build 5.5.0.319 and it works fine with the CFRTplayer. Did you try some other CFHD files?

Files generated with NeoScene play correctly.

I duplicated your result. I didn't do anything special. Stated with a plain HDV file in AE. Applied a few FX, Rendered as Cineform AVI High HD. Opened in PPro and with the CFRTPlayback, I get the exact behavior that you do.

Try changing the playback resolution to "Full", as that made the CFRTPlayback player work for me.

Well, I am always at full resolution.