Your tutorials on the internet are hopeless because they tell me to click on certain links that do not exist in my version.  2012 Build 16.4.3528.0331
I have laboriously edited a 3 hour movie, carefully.  I saved the project.  

Then when I try to save the movie it starts rejecting sections of the project saying the segment  is corrupt.  AND, all the editing I have done on those sections seems to have disappeared.  It seems I have saved the project which DOES NOT save my editing!?

BUT I had previously saved the unedited video as a movie in Movie maker and all sections were accepted!!!  

How do I find out how to handle this?  I try the tutorials BUT they must be for an earlier version!!!!!!!!!!  

This is hopeless!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The feedback form does not expect me to have Build 2012!  What is going on!  

Its 2015 and your tutorial help material is for 2011!!!!!!!!!!!!!!!!!!!!!
I have literally spent 50 hours on this project and I am afraid it will all be lost.  

I feel like buying a Mac!!!!