I don't know what cow is causing this but a few cows are crashing the rendering engine.
fluidcowrendererror.txt

Hard to tell but the tool tips seem to be saying fluidcow.fluid or something like that.

Try 1.1.19 version.

Looks good. Found the cow with the no texture texture and a name of fluid.ftoreslurry which I think is a fluid registered by Factory Tech but never used by it and therefore not having a texture.
Thanks for the fix!

Will do so and report back.