alice-teacher Fwd: alice error-texture

[Laurie Solomon Cohen]

Below is the print out of an error we received while my student was creating his story in Alice. He would have been unable to save his work!
We figured it out, and changed it so he could save it, but we wonder why it had this problem, so we don't cause it in the future.
The error seems to have occurred since he changed the Texture of the orb (circle class) to be moon texture.  When he changed the texture back, it was able to save with no error.
Is this a known Alice error? 






---------- Forwarded message ----------
From: aryeh miller <mannaryeh02 at gmail.com>
Date: Tue, Dec 9, 2014 at 5:27 PM
Subject: alice error
To: lcohen at yeshiva.edu



An error has occurred while attempting to save your world.


This is a critical situation that needs to be dealt with immediately.


NOTE: Pleasecheck for a directory co-located with 
your world named "Backups of <YourWorldNameHere>" which 
should contain previously saved versions of your world.


We at the Alice Team apologize for any work you have lost


Please accept our sincerest apologies.  The Alice Team.








Alice version: 2.4.2 (July 2014)


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: C:\Users\Public\Desktop\Required






Throwable that caused the error:


java.lang.RuntimeException: Could not find ancestor: world, class: class edu.cmu.cs.stage3.alice.core.World
Key: 
Details: 	circle class edu.cmu.cs.stage3.alice.core.Model
	moonTexture class edu.cmu.cs.stage3.alice.core.TextureMap




	at edu.cmu.cs.stage3.alice.core.Element.internalGetKey(Element.java:789)


	at edu.cmu.cs.stage3.alice.core.Element.internalGetKey(Element.java:792)


	at edu.cmu.cs.stage3.alice.core.Element.getKey(Element.java:804)


	at edu.cmu.cs.stage3.alice.core.reference.DefaultReferenceGenerator.generateReference(DefaultReferenceGenerator.java:39)


	at edu.cmu.cs.stage3.alice.core.Property.encodeReference(Property.java:690)


	at edu.cmu.cs.stage3.alice.core.Property.encode(Property.java:720)


	at edu.cmu.cs.stage3.alice.core.Element.internalStore(Element.java:1688)


	at edu.cmu.cs.stage3.alice.core.Element.internalStore(Element.java:1744)


	at edu.cmu.cs.stage3.alice.core.Element.store(Element.java:1790)


	at edu.cmu.cs.stage3.alice.core.Element.store(Element.java:1803)


	at edu.cmu.cs.stage3.alice.core.Element.store(Element.java:1806)


	at edu.cmu.cs.stage3.alice.core.Element.store(Element.java:1838)


	at edu.cmu.cs.stage3.alice.authoringtool.dialog.StoreElementProgressPane.construct(StoreElementProgressPane.java:47)


	at edu.cmu.cs.stage3.progress.ProgressPane$2.run(ProgressPane.java:86)


	at java.lang.Thread.run(Thread.java:662)










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