[Help] Can't get in any AI Vehicle.

[code3211]

From this link
DayZ (arma) AI Controlled Bus Route.
http://opendayz.net/threads/dayz-arma-ai-controlled-bus-route.10057
I can't get in the bus or any AI that on vehicles
(I'm using DayZ Epoch 1.0.2.3 + Sarge AI + ChernarusMission).
but AI bus is work well.
any solution?

ps. Sorry for my english.