I have just updated my laptop to Windows 10. Before I have done this, on Windows 8.1, I was working on a movie in Windows Movie Maker which I have spent a lot of time and effort on. Now when I open the file in Windows 10 to continue working on it, every clip has an error message saying "The file might be corrupt or in a format that Movie Maker cant recognise. This movie cant be saved until this clip is removed from the project. Error 0x87160139"

Surely there shouldn't have been changes in the update that would result in this??