Stopped working for me after doing a few updates (hadn't been on in about 2 weeks, so Factorio and the mod both had updates for me, as well as some others). Will probably try disabling all other mods in a few to see if it is a mod conflict or what.
Edit: Saw someone in another post mention it was updating to 0.5 broke it. I was on 0.5.1, so tried going back to version 0.4.11 and all is well now. I should add that I'm running Krastorio 2, as was someone in the other thread. So might be worth trying this.