I already mentioned this somewhere else, but never took the time to make a saved game for it. Now I did, so for testing purposes, please look at the attached file.
So about the actual problem: When I send one of those three silacoids straight down to the elevator-entrance at the ground level, they don't take a suitable path there. They don't even end up where they were supposed to go to but one field aside from the target. This seems to be happening only in terror-ships, when dropping from the second level, and only with silacoids. Can someone else reproduce this with latest nightly? At my side, this is happening for a few weeks now, so it's not exactly a result of latest coding.