So, I was just doing FW update on my Aeotec Home Energy Meter Gen5 that required to remove it from my network. I did that, updated re-add and noticed that now I have 2 meters in my things list, tried removing and adding again and now I have 3 meters (12 devices in total as I use a composite DTH i created). When I try to remove them from IDE I get:
Cannot invoke method contains() on null object
Anyone else having this problem?