Windows Movie Maker 12 turning clips green

Whenever I split a clip on windows movie maker it turns it green. I have never had this problem before and I have been using this software since Decemeber 2012. I updated my computer, updated the software, checked for more updates and found none, restarted the software, restarted my computer, reimported the movie files, and checked my video driver for problems and found none, I also repaired the software. After all that I have done, northing has changed. I am running this on a Windows 8 Toshiba satellite and am using windows movie maker 12.  My computer is up to date.