Movie is loading twice

Question

Structure:
* one main movie
** one swf loaded into that
*** one mc in that
I animate the mc using the timeline (movement up) and on the
first frame of the same mc I generate up an interface inside it.
This all works, but:
When the mc has generated the interface and animated all the
way up and stops....... It wipes clear and runs the script on the
first frame again. In effect the interface blinks for half a second
and everything that's been changed through functions up until that
needs to be called again. o_O
The wiping seems to coincide with the moment it hits the last
frame on the animation (ie a new keyframe), but that shouldn't
cause the movieclip to restart, right!? Someone must have had this
issue before, do I have to make a scripted animation instead of
using the timeline?

Answer 1

Right I should have mentioned that, I do have stop() on the
animation and the mc that I generate an interface in is just 1
frame, which normally means it will run just once. (and if that was
the problem it would load a whole lot more times then twice, now it
loads twice and then it's done.)