president_brown.xml musn't be rigged/skeletoned properly because the game crashes whenever it tries to load it (you fight against brownpants in the campaign)

12:17:50: loading models in media/packages/vanilla/factions/brown_default_basic.models
12:17:51: loading models in media/packages/vanilla/factions/brown_default.models
12:17:51: item vest3_6 not loaded, skipping model soldier_c_vest_t3.xml
12:17:52: item vest3_6 not loaded, skipping model soldier_wickt3.xml
12:17:52: item vest3_6 not loaded, skipping model soldier_sword_v3.xml
12:17:52: item vest3_6 not loaded, skipping model soldier_c_vest_t3_alt.xml
12:17:52: item vest3_6 not loaded, skipping model soldier_c_vest_t3_alt.xml
12:17:53: CHECK: soldier model file president_brown_alt.xml not found
12:17:53: !!!EXECUTION HALTED!!!

this bug crash can be resolved by using the president_brown_alt.xml from Pack-VB for now