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Confirmed on my first test of Erebus. I'll play a few vs AI to see if I can figure out where it breaks. Edit: Yeah, it broke as soon as I got rank 1 of Improved Conversion Aura. I hadn't even picked up Coven yet.
I am also a network admin, and I had the exact same problem. Thing is, it was with DotA/WC3, not Demi. It was the darndest thing, I couldn't figure it out for the life of me.