I lost everything

[shotcut]

I did not find any problems in your aa.mlt file. Please upgrade to the latest version from here to get off that known buggy version:

Shotcut - New Version 21.06.29

As mentioned elsewhere INVALID usually means some files it uses were moved or removed. When you open the project it might show a dialog saying files are missing. You can get read more about that here:

Project Management

Introduction Shotcut does not provide very much in the way of project management at this time. Rather, you are required to manage many aspects of this. There are a few things you should know: Shotcut saves to a project file in a text format called MLT XML. (Technical detail on that format can be found here.) The project file does not contain any of your media. Rather, it only links to your media files by file system path and name. There are 3 different kinds of projects: Clip If you put a…