Screenshot:
https://www.dropbox.com/s/kaffdya0dye574e/factorio-error.png?dl=0

Also picking up any entity crashes the game back to main menu.

It crashed when it tried to print out your bonus reach, and that reach happened to be nil - it had no value.
I'm initializing that value to 0 when a player "joins the game" (starts a new game in single player, or joins a server).
One way I eventually was able to reproduce this bug was by loading a saved game, that wasn't started with that mod being active.
If that sounds like something you did too: good. Otherwise, try to tell me more about your situation.
I'll try to find a solution, or at least a workaround for that.

In the meantime, you should be able to force initialization of these stats by hosting that saved game as a multiplayer game. Then you can save it, load it in single player again, and everything should work.

Let me know if it helped. :)

Yeah I didn't start using the mod with a fresh save mod, I put it into a save I had been using for a day or two already.

OK I'll try the multiplayer thingy!

I fixed this issue.
Not sure if it'll be enough in weird cases like loading in single player a save coming from a multiplayer game that was played by someone else... but that's for another time.

The multiplayer trick worked for me