Your project file got the infamous "@0" disease we saw in this thread:http://www.logicprohelp.com/forum/viewtopic.php?p=435061#p435061
Basically "@0" gets appended to the contents of you project file bundle:
You simply need to edit those out of the file names (control-click the project files and choose Show Package Contents).
I've attached a fixed version of your Awesome Melody project. Make sure ant other project-related files do not have these @0's appended to their names.
Also, I found this funny message in the OS's console when trying to open your project prior to editing out the @0's:
Can you believe it???