I'm using 3ds max 2013 and Vercingetorix's import/export tool.
I tried editing Egypt's Desert Axemen by deleting the shield, and that was the only change I made. I saved the new file and it appears in game without any crashes or anything.
The problem is that the skeleton is completely messed up, it looks like something from a horror film - their faces shoot forward and slam the ground when they walk, their left leg shoots off and forms a giant 'U' shape, etc.
So, I tried again from scratch, this time not editing anything at all, just importing the vanilla .cas file then exporting it under the new name. Now, the unit still has the shield in game, but the exact same skeletal issues, despite me not making any changes at all.
I noticed also that when I export files, they only come to around 18 KB, whereas vanilla ones are around 40-50 (I'm using only the highest quality models).
Any tips on where I am going wrong (+rep for any advice!)?