I believe the reason the game shut down is because the game only supports 2 types of media file the wave and Ogg audio files so when the game gets to this point it's trying to run a file that it does not understand and shuts down.
2nd if you want to have ship meet I found that the best way is use the target_throttle command this will direct your ships to the target ship here is an example below.
<event id_arme="34987cf9-2e10-41b8-9c0f-d26aabbca9e4">
<if_exists name="Celestra" />
<if_variable name="Libran" comparator="NOT" value="1.0" />
<add_ai type="TARGET_THROTTLE" targetName="Libran" value1="0.4" name="Celestra" />
<set_variable name="Libran" value="1.0" />
</event>
3rd variable
= is normally the variable that is currently set
!= means not set but is normally followed by set_variable command
Hope this helps