--I seemed to fix this before I posted, but it might be a poor solution, so I will post the entire thing anyway--
I have a small problem using this script using an ixus750(SD550). From what I understand it is supposed to continuously monitor for movement, that is, loop when it takes the first image.
For me this does not happen.
The first image is taken without any problem, but it seems the camera is stuck with the trigger half down. It acts the same as if I take a picture and then release the trigger only half way, with live view but no script action.
This happens both with fast and slow react photo.
I did some quick debugging and found that i stops at the end of the fast_md_loop
get_prop 205 P
Here P is always one, if i exit <alt> mode and enter it again it resumes normally and I can take another photo.
I have tried to change different things, but nothing seems to help. Trigger delay from 0 to 20, OSD on/of, makes no difference.
Removing the sequence made it take a few extra pictures some times, like early versions of the script I guess but not an infinite loop. Increasing Threshold or delay would be a temporary fix, but it is not what I am looking for.
Right before the code I posted earlier I added 'release "shoot_half"' and it appears to work like it should, just changing shoot_full to shoot_half did not work. Feedback appreciated, and I hope I just have not missed a newer release with this fixed.