Microsoft support specialists have been troubleshooting my problem with movie maker and below is what they suggested.  can you help please?

Thank you for waiting. Our support specialists have checked the information that you've provided and it still shows that Movie Maker is crashing because of mfreadwrite.dll, which is a Windows system file. Since the System File checker shows an error that it cannot fix some corrupted files, you need to manually repair it. This involves system files of the operating system. Because of this, we suggest that you contact Windows 8.1 support for further assistance on how to repair it. You can contact Windows 8.1 within the link below:

Windows 8.1

If you have other inquiries regarding Movie Maker, please let us know. We'll be here to help you.