Hi, I looked at it and there are some missing and wrong pointed i3dMappings causing part of the issue. The i3d itself looks fine. For some reason, the unload/selling station is failing vanilla load which is causing the whole thing to stop working.
One thing you could try is copying the <productionPoint> section of your xml inside of the <thStateController> section. Looks like I might have a bug in there when using the default <productionPoint> section. That entire mod will be will be getting an upgrade as soon as the one I'm working on right now is finished.
Main thing is, keep an eye on your log file. Everything I found was mentioned in there. Hope that helps!