I'm having an issue with Pop Video and am wondering if anyone else has experienced similar or can suggest a fix: 
I import a green screen clip into Pop Video.  I mask out some edges with the mask tool, and I render it in Pop Video. 
It appears to be rendering correctly, however once the video is complete, when I attempt to veiw it, I basically get a freeze frame of Frame 1 of my video, with the green screen rendered in black, but the green mask showing as transparent.  The audio plays as normal, and the video slowly fades to black as it plays.  

The issue occurs if I render as a Pop Video or as an MOV file.  (I have not tried AVI).  I'm running a Windows 7PC, Core I7 Processor, 12gb ram with a TI1050 Graphics card.   I have the most up to date Nvidea drivers, and the most up to date copy of Popvideo 3

Thoughts?