Load files.  Edit files, trim, add titles.  Different things keep happening.  Files will start to display as the whole thing but will not play the last few seconds - If you go to trim that file, it will play and show to the end, click save, and it will still not play final seconds.  Delete that file with intention to reload then it will do the same thing to the previous file.  Sound keeps turning off, but found out how to "fix" that.  Eventually when you click split it will not perform the split or it will wipe out several of the files.  On my last save I attempt to reload and it will show the 38 minutes on the ticker but there are no files to the right and if you play it it will only show the titles I added but not the video/audio - Click to view full screen or attempt to change the thumbnail size it pops up a 'Sorry, movie maker had to shut down unexpectedly. please restart it, and then try again. (error: 0x80070057)'.  Not impressed, looking at other programs but would rather use this since it came with the computer.  I have struggled through making the same move at least 3 times, have checked for updates, removed and reinstalled, attempted to save after each clip edit, but the same problems keep happening.  Using HP Pavilion 23 with Windows 8.1.  Computer is approximately 1 year old, just started using the program a few weeks ago.