Keyed footage from Premiere Pro CC getting cut in half by AME

Hello all,
   I am having an odd sort of problem.  Anytime I have a sequence from Premiere that includes Keyed footage (UltraKey), the render from AME cuts the keyed subject in half, resulting in a waist - down view.  If I take that same sequence and export it directly from Premiere, this does not happen - it renders and exports fine - so the issue is definitely an AME one.  Since I can export from Premiere, I'm not completely stuck, but I am editing a series of more than 50 videos with anywhere from 2 - 7 keyed segments in each one, and not being able to cue up a batch of renders, instead having to do them one at a time from Premiere is an absolute workflow (and deadline) killer.
    I have, of course taken all of the usual steps...  Restarted the application, restarted the machine, checked for any updates, trashed and rebuilt preferences - twice (once using the Shift at launch method, the other by going to the preferences folder and deleting them directly) - nothing has made any impact on the situation.
    If this is some sort of known issue, i would appreciate some insight as to when it might be resolved.   If it is not, and there is something awry in my universe, then I need some assistance in figuring out a fix.
    Now the specifics:
     2012 iMac i7 @3.4GHz / 16GB / OSX 10.8.5 / PP CC 7.2.1 (4) / AME CC 7.2.0.43 (64-bit) / Mercury Playback Engine GPU Accelration (Open CL) from GeForce GTX 680MX with 2GB
Thank you,
- Will Frazier

Right - so switching AME's render engine from Open CL to CUDA resolved the problem for me... just in case anyone else has a similar issue.

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