So I had 5 videos which I didn't realize were .MTS files. I realized while editing but I figured since it imported I shouldn't have any problems. All the videos combined equal 1 hour. The importing took a while but nonetheless it was fine. Since this was a video for youtube, I ended up cutting it down to 6m50s. While I was almost finished editing, parts of the video would get corrupted. not all just chunks of it, plastered with the yellow hazard sign. But i would just quickly save it close it out and open the program and file again. No hazard sign. This happened twice before I tried to save the movie. When I did try to save it, It would stop and give an error mesage saying WMM can't save .MTS files. But it can import them? Is there a way I can fix this? maybe change the .wlmp files to MP4 so I can save it? It took me forever to edit the video,, I dont want to have to do it all over again!