ahh, i know why that could happen. that's my bug :/
you're right, it's a near simultaneous deliver. I just need to move the alertentity stuff to the bottom of all those script blocks, rather than have them at the top...
Thanks for pointing that out.
EDIT: version 4 is
here.
Changes:
Fixed near simultaneous deliver bug
Added a pathaction to one of the allied deliver routes
Note: the wait 1000 between alertentity and construct helper_ent in my original example is not needed (and probably shouldn't be put in).