1. Couldn't get the weapons. I added a few things to log and maybe I will catch it. But as I said, I am going to change weapon system anyway. As for the freeze, I have a strange repro that is different to what comes out of your logs. I am now fixing it.
2. That arrow is that arrow that goes up and down on a screen to the right of the big black "elevator box". It gets blurred after each placement change. As I mentioned in the other comment, I will be investigating it.