Apotheosis Crash. Cave Spider spawner and No AI modifier crashes on mob spawn

Version: 1.3.8h
Steps to Reproduce:
Place mob spawner
Right click cave spider egg on spawner
Right click chorus fruit onto spawner
Wait for mob to spawn. 

Tested in two different worlds, one a testing world to identify the culprit. Spawner was also upgraded to max speed and Redstone control. Adding the No AI caused a crash on the next spawn.