Noise Harvester battles the Monster

I have a Monster HTS3600 power station that I've been using for a while. Recently I picked up a PS Audio Noise Harvester. I was surprised to see that plugging it into some of the outlets on the 3600 caused the Harvester to go wild -- emitting light almost constantly. The other outlets on the 3600 made the Harvester act the same as if it had been plugged into a wall socket -- i.e. only an occasional flicker.

I expected that the 3600 would have cleaned up enough stuff that the Harvester would barely register, but just the opposite occurred. Any ideas what's going on?

(I almost titled it Noise Harvester battles the 10-headed monster, but then I thought that power conditioners don't really have extra heads, they have extra anuses. :-)