Casse CTD and possible bugs (?)

First, I managed to get a CTD when I accidentally tried to view Camulosadae on the battlemap. Meant to look at the trade, actually. The error was as follows:

"Generic Error:

Failed to find texture 'eb/data/models_unit/textures/UNIT_GREEK_PELTAST_MACEDON.TGA'."

Secondly, weren't the Casse supposed to be able to trade with the local eleutheroi? For whatever reason, I am unable to get Camulosadae to trade at all. Not with the neighbors, not with the Aedui down south, nobody. No trade fleets go to its port or come from it. Is this a bug or does nobody want to trade with me ( ;_; )?