Actor_PlaySpeech yells a random sound

Hi there,

i am currently creating my own mission (crafted map, cinematics and some objectives). I have an event that is fired at Intel_Complete:

Intel_Complete = EVENTS.MyEvent_Complete,

The event itself simply triggers an actor speech:

EVENTS.MyEvent_Complete = function()

	CTRL.Actor_PlaySpeech(ACTOR.NARR, Loc_GetString("$<Mod_Guid>:10"))

The event is always triggered at the right time. But only sometimes my text is output from the locdb. Much more often, a Russian shouts something instead. Example:

I am not the first one with this problem. I would be glad if i get help.

Best regards