Layers became "corrupted"

mariad11090358  wrote My project I've spent months on has all of a sudden became corrupted and it won't even allow me to flatten the image. It claims theres been an "un-expected end of file". Is there any possible way I can get my project back I've lost hours of hard work on? Anything will help I'm desperate to get my project back, thanks!

Just a possible case:

If you have recently updated Windows 10 to the 1803 edition, read this (explanation and solution):

Error: An integer between 50 and 8 is required | Elements | Windows 10