I made a couple videos of my kids last week and now the files do not want to work. They did work previously. I did not change any of the settings and used the stock video player to watch them. When I play them, it says file cannot be played and gives a blank screen and then closes. I tried opening the files with quicktime on my computer as they are .mpg4 files, but it doesnt work either. WMplayer also will not play them. Any ideas? The files do have a name and even have a size about 67,000 kb. I also have a few pictures like this that wont open either. Any ideas?