Hi, I'm using build #124, and I have two errors with Assembly line, the first one is that when I put a robotic arm, it doesn't have any texture, so it's invisible. And then, when I placed a line of conveyor belts, I got this crash:
http://pastebin.com/8iRQAxiz

Not sure whats up with the armbot but its pretty much worthless since the coder doesn't work right now.

As for that crash i though i fixed it in build 122 but i'll double check. Got a mess of bugs a mile long from some of the recent changes i've been doing.

Fixed 7641973

i'll push a new build when i get back home. Other than that keep an error on your logs when you see network devices like the conveyor belts, or pipes stop working. You should get spammed by an error "Failed to initialize" trailed by the network class path. When you do report it an i'll take care of it ASAP the error is simple an issue with the new way i handle creation of these networks to link the tiles together.