Hello. As in previous users posts, I also encountered problems in Load/Unload cars at this industry tracks option. (TRS19 SP5)
It unloads few cars, but when I pull rest of remaining cars to unload. It looks like MI freezes and nothing happens. Sometimes leaves a car in the middle of ramp loaded.
I'm also waiting for fix. JR MI is on my all published routes which I'm still updating from time to time.
This sounds very similar to what I've encountered. For your logs, it would be easier to understand if you typed the name of your Multi Industry II into the search box, to limit the messages to the relevant ones. Ideally, if they do not have custom names, it would be easier for others to diagnose what they are doing.
But from what I can tell, it replicates my own experience, which is that cars on the ramp are evaluated but not acted on, randomly. About 1 out of 5 cars randomly fails to load/unload, even though they are evaluated and not skipped.
I had traded several posts with Justin about this, but I cannot tell if it is being looked into. If he cannot replicate and identify the problem, or can't fix it, perhaps the version we have is the final version. I'm happy to wait -- after all, it is a free asset and a brilliant concept, but it would be nice to know if there is any prospect for improvement.
As well, I find that when I edit the MI2 in mode 2 (Load/unload all cars at this industry track - aka delayed loading mode with adjustable length), it sometimes stops functioning completely, even after quitting the game, rebooting computer, or going to surveyor and opening its dialogue box to check it. It will initiate the timed search, but not evaluate any traincars that arrive or depart, even newly placed trains/traincars. I wish the asset had a "force reset / force-restart search" button.
Basically, I am concerned that mode 2 basically doesn't work consistently enough to be usable. Only mode 1 (default) and mode 3 (loading while moving) work consistently. And this gives up the main benefits of (1) delayed loading, (2) being able to drop cars for later loading/unloading (doesn't take control of train in mode 2), and (3) adjustable length.