[Numahr]

Hurrah! Thanks Llamabeast. I checked the versions of my mod, and it turned out that my CBM 1.83 was different from the one attached to the first page of this thread. Go figure out why. Anyway I replaced it and I can now summon zemys and other niceties!

I wish I had found this much earlier though. How many gems did I loose in summons that did not appear, and well, my whole strategy up to this point would have been actually implemented instead of playing with vanilla summons only...

But the main point is, that there is no bug, and every thing is solved from that point of view.