crash-2017-07-16_18.13.17-client.txt
started crashing when opening the creative morph menu after I installed thermal foundation/expansion/dynamics

It seems like this mod which you are installed, modifies net.minecraft.entity.ai.EntityAIWanderAvoidWater class and renames it. The only thing I can do is to write a patch that will ignore this broken morph which is trying to be created in the menu.

Hmm, not sure which mod would change that ai, if you could do that I would be really grateful, can't check entity names atm to add flight to all the new mobs..

Could you check which mod exactly causes this issue?

No response, no fix.