source file problem

[kj93]

when I create a project the source file I save in it will not stay once i close out why is this and how do i fix it?

[jj2007]

It's a known problem (though it never happened to me):

http://forum.pellesc.de/index.php?topic=6333.0
http://forum.pellesc.de/index.php?topic=6427.msg23927#msg23927 (<<< with recovery suggestions)

Create a folder somewhere, and keep backups there.