I was messing around with this mod and recursive blueprints, and decided to use the Logistic Network Interface to do some fishing. That's when I discovered the crash. I placed a ghost image that already had some signals and noticed that my UPS started to drop like a rock. I also noticed that the Alt Bubbles for the signals started to look really weird, as if of them were on top of each other. I thought I would be able to fix the UPS issue by placing a real Network Interface on top of the ghost, but then my game crashed.

Steps to reproduce
1. In the options window, select "show circuit icons in Alt mode"
2. Build a Logistic Network Interface
3. Put some signals into the built-in constant combinator
4. Grab a blueprint
5. Copy and paste the Logistic Network Interface
6. Wait a little while
7. Place a real logistic interface over the blueprint from step 5
8. Crash

I think this is because you have a loop somewhere that is placing the Alt Bubbles every game tick, and trying to delete them with the real interface is causing to many actions at the same time.