Hello, I am trying to access this file that I have worked for several months on, but it will not open. I had to reboot my computer when it was open, and now when I try to open it, it comes up with an error saying that it can't be opened. I have checked for a backup file, but I can't seem to find backup files for any of my projects. I am composing this for someone, so fast responses will be greatly appreciated.
Below is the file.