I'm a novice so please be detailed with any answers. I edited a 30 video using movie maker and then saved it by selecting the 'save as' prompt. I can find the video but am unable to reload it into the program to complete my work. I selected 'open project' and the browser opens to a screen with  my project listed. I selected the project name and then clicked open. Nothing happens. Screen in movie maker remained black. I waited 5 minutes and still nothing. 

I'm running on windows 10 which just had a major up-date so have no idea if this is part of the problem.

What steps should I take to open my project?

thanks for everyone''s help....my fingers crossed...