Movie Maker fails to launch with the error "The program can't start because UXCore.dll is missing from your computer. Try reinstalling the program to fix this problem." I have uninstalled Windows Essentials 2012 and reinstalled several times. I have rebooted. I have deleted Windows Live directories from Programs Files (x86) and Common Files directories. I have delete UXCore.dll from system32 directory. I have followed all suggestions in this post all without success. UXCore.dll exists in my system32 directory and Program Files (x86)\Windows Live\Shared directories. I am running Windows 7 Enterprise 64 bit. Photo Gallery (which is installed with Movie Maker) launches and functions without issue. Thanks.