I asked what to do from Windows Help. They said to uninstall it, an then install it again. Did that.
Still didn't work. I then uninstalled it, and deleted the installer, even.
Then, I downloaded it again. It still crashed!!!
So, I am now trying the Sony Vegas 13 video editor. It has a nice matching thing, to make your various videos from different cameras look the same. Before, I couldn't get it to download my videos into my computer.
I put everything into it. Went in OK. (Phew!)
Then, I went to save the raw files, and they had a thing to get it to go straight into video. I punched that button!!!
It seems like the long version IS now able to play!!!
So...I now hope that I can figure out how to edit on this thing, and have everything ready for November 19th's Nik Beat Memorial and Hank Benefit.
Wish me luck!!! I have over an hour of footage to go into 4 minutes!