I am using Vista Ultimate with a 64 bit OS.
Machine1. GPU ATI RADEON X850 XT Memory 8GB
StitcherVer5.61,Ver5.52
Machine2. GPU GeForce 7800 GTX => Beta Version, 6GB
Stitcher Ver5.61,Ver5.51
Machine3. GPU GeForce 8600 GT => Beta Version, 7GB
Stitcher Ver5.51
QuickTime Version is Version 7 (7.3.80).
Now!!
Stitcher Ver5.51 is moveing Cubic QTVR.
Stitcher Ver5.52 is moveing Cubic QTVR.
Stitcher Ver5.61 is not moveing Cubic QTVR.
Stitcher Ver5.61 is not move like your report.
I know that bug is contained in stitcher.