Hello

I have been using moviemaker for a while and even though it's very simple and I would like to recover some of the features it once had, I have not had major problems with it.

But since yesterday I have one in this one project. I'ts almost finished. I want to crop this one tiny part before adding music, but when I do it, nothing happens and when I go over it or the adjacent videos they disappear as if I had not uploaded a thing. As I said, it has happened since yesterday (when I even closed and rebooted as we had to in the past to fix such issues).

What can I do?