Rigid Model Crashing Bug

Hello, I've been looking at the files for the Ancient Empires Part 2 mod since I wanted to add a few units of my own for the mod. However, after unpacking and placing all the files into the Assembly Kit's working_data section, I found that files egyptian_shield_01-06 are completely unusable and cause a crash of the TWeak editor.
It seems like everything else that was unpacked from PFM just fine and all the textures and models are where they should be. Would anyone with experience with modding AE or in general know what might the issue be?

Thank you