Why does movie maker get to 43% and then stop working. I saved 5 movies just prior to this successfully and now it wont do anymore. I tried some of the fixes posted here but failed. I'm running version 2012 build 16.4.3528.0331. The movies all average about 7 minutes each. The files I'm using are .jpg mp3 mp4 and effects from movie maker. Nothing out of the ordinary. I did notice in the control panel/programs and features/uninstall that there is a Windows essentials media codec pack 3.6 that was installed in 12/6/2011 but I ran the repair option on the version 'm running right now (version 2012 build 16.4.3528.0331) and it says repair was successful. Please help me.