I am getting the following error message prior to a CTD when loading a siege battle with IP in Harondor:

"Generic Error:

Failed to find texture
'bi/fatw/data/models_unit/textures/4a_rk_militia.tga.tga'."

I resolved the problem by copying "... bi\fatw\data\models_unit\textures\4a_rk_militia_haron.tga"
and renaming the file "... bi\fatw\data\models_unit\textures\4a_rk_militia.tga.tga".

This probably warrants a hot-fix.