Gradient Transparancies

Hello my Kirupa friends!

Im having an issue with gradient transparancies, Ive been using these succesfully with

maskee.cacheAsBitmap = true;
maskMC.cacheAsBitmap = true;
this.maskee.setMask(this.maskMC);

However recently I tried to cache a movieclip to bitmap and it appears the movieclip’s x length is too long. If I shrink the movie clip to the size of the stage everything works as it should. any suggestions? thanks in advance!

-alex