Movie Maker Movie Goes Blank

I was working on a Music video last night and i had everything set correctly. I left to go to baskin robbins but then when i came back and put in all the other clips (I had saved it and closed it before i left then i opened) and saved it, exactly when it goes to the clips i put in after I went out, it goes completely black and doesnt go to color until I repeat clips. I'm not sure what it is I'm doing wrong but if somebody needs to see the video I can put it up and you can see. Thanks in advance!

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