Try it like this :-
Activation when Blufor is present.
10 x 10 radius
this and (alive ka1) or (alive ka2) and (player in ka1) or (player in ka2);
act: tskObj3 setTaskState "SUCCEEDED"; [tskObj3] call mk_fTaskHint;
Without the "This and" it will just execute the cond box and not look at the other conditions of the trigger except the timer.