CTD on menu screen, am I missing something?

09:25:24.773 [script.err] [error] Script Error in mods/EBII/data/export_descr_unit.txt, at line 4024, column 1
Could not find soldier battle model for unit type 'Triarii_Polybian'.

09:25:24.773 [data.invalid] [error] DATABASE_TABLE error found : error reading record from file mods/EBII/data/export_descr_unit.txt.