sometimes you have to swapdepths with something else using the swapdepths command before remove will work. You can also try inserting a removemovieclip command inside the timeline of the movieclip itself.
swapdepths worked! That's realy odd because it's the only movieclip in its parent and it was already created with getHighestDepth... anyway, thanks for your help!
I'm sorry, my mistake, it seemed to have worked but it was just because I had code to clear the movieclip childs...
swapdepths doesn't work in my case
Any other ideas?
Ok I managed to do it with swapDepths I used swapDepths(1000) and now it lets it get removed!