I just ran through all of Masterwork's creature definitions with my "parsebody" script (now available on my User page on the wiki), and the following problems showed up:
* Manticores specify that they have HUMANOID_JOINTS, but they don't have humanoid limbs - as a result, their shoulders, elbows, hips, and knees aren't connected to anything
* Star shamblers specify both TWO_NO_CLAW_TENTACLES and SIX_TENTACLES, giving them two right upper tentacles ("RUT") and two left upper tentacles ("LUT").
* Frog men are missing a "]" in their skin color modifier - "[TLCM_NOUN:skin:SINGULAR".
* Frost giants have a very strange body definition - their individual body parts are specifying connections to their armor, rather than doing it the other way around. I'm not sure how this is supposed to work, but it parses as if their armor is inside their bodies. As a general rule, all body parts should be able to trace back to an [UPPERBODY] part, which is
not the case here.
* Deep crows and thunderbirds specify both HUMANOID_JOINTS and HUMANOID_ARMLESS_JOINTS, causing them to have two pairs of shoulders/elbows/wrists (one of which isn't connected to anything)
* Dust landmine has a broken (but commented) ITEMCORPSE - it specifies a material, but not an actual item type.
* Female blind cave ogres have two body parts with the name "LB": "lower body" and "left breast", which might cause problems.
* Asp vipers have an extra "[" after [EXTRAVISION], which might cause problems.
* Lots of birds are specifying HUMANOID_JOINTS despite not having arms (and the same for several legless creatures), but most of them are
known issues.