Running a sequence this evening I paused the sequence with the “wait for current frame to complete” option. After the frame completed, the status bar said “Downloading…” but never progressed beyond that for several minutes and I had to exit from SGP.
at this point I knew something was wrong so tried to abort and found SGP was stuck so exited SGP:
[1/13/2015 7:29:44 PM] [DEBUG] [Main Thread] User requested sequence abort...
I also checked the output folder and observed there was nothing there. It really looks like SGP got stuck without downloading the image from the camera.