Help Publishing on Windows Movie Maker?

Ive made three videos on WMM and each 1 will save correctly, but wen i try 2 publish it it wont do it properly. Ive noticed that during certain parts of each vid, it would freeze. ive checked this on several websites that said 2 change either the music or video files that would freeze and that would work. however, changing both did little help, and i noticed that the same video would work on other amvs and no matter wat i changed, the vid wil freeze in the same spot. any suggestions?