Project of mine has been corrupted! Please help, due today!!

[stroodle]

In a rush this morning I took my USB with my Alice final project (a random generation video game with levels and collision detection). Ive spent a lot of hours on this and have no previous saves of because Im a dummy and thought Alice's auto-backup would be fine. Teacher allowed me to email my game by tonight but there's no way I can re-do from scratch in time. I desperately need some help, there's just GOT to be some way to restore the file. Whenever I try to open it (and all the backups as well) I receive this message:

Unable to load world


Alice version: 2.3
os.name: Windows 7
os.version: 6.1
os.arch: x86
java.vm.name: Java HotSpot(TM) Client VM
java.vm.version: 20.0-b11
user.dir: G:\Alice2.3\Alice 2.3\Required

Throwable that caused the error:
edu.cmu.cs.stage3.alice.core.IllegalNameValueExcep tion: Unfortunately, something else in this world is already named "index," so you can't use that name here.
at edu.cmu.cs.stage3.alice.core.Element.checkForNameC ollision(Element.java:221)
at edu.cmu.cs.stage3.alice.core.Element.internalSetPa rent(Element.java:680)
at edu.cmu.cs.stage3.alice.core.Element.insertChildAt (Element.java:1050)
at edu.cmu.cs.stage3.alice.core.Element.addChild(Elem ent.java:1058)
at edu.cmu.cs.stage3.alice.core.Element.setParent(Ele ment.java:641)
at edu.cmu.cs.stage3.alice.core.response.LoopNInOrder .loadCompleted(LoopNInOrder.java:59)
at edu.cmu.cs.stage3.alice.core.Element.loadCompleted (Element.java:1429)
at edu.cmu.cs.stage3.alice.core.Element.loadCompleted (Element.java:1429)
at edu.cmu.cs.stage3.alice.core.Element.loadCompleted (Element.java:1429)
at edu.cmu.cs.stage3.alice.core.Element.load(Element. java:1559)
at edu.cmu.cs.stage3.alice.authoringtool.dialog.LoadE lementProgressPane.construct(LoadElementProgressPa ne.java:42)
at edu.cmu.cs.stage3.progress.ProgressPane$2.run(Prog ressPane.java:86)
at java.lang.Thread.run(Thread.java:662)

Thank you in advance I am scrambling here...