Alice Error
 

I was working with Alice when I found this error:

Throwable that caused the error:
java.lang.IllegalArgumentException: InputStream cannot be null
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:120)
at edu.cmu.cs.stage3.alice.core.Element.load(Element.java:1441)
at edu.cmu.cs.stage3.alice.core.Element.load(Element.java:1485)
at edu.cmu.cs.stage3.alice.core.Element.load(Element.java:1533)
at edu.cmu.cs.stage3.alice.authoringtool.dialog.LoadElementProgressPane.construct(LoadElementProgressPane.java:37)
at edu.cmu.cs.stage3.progress.ProgressPane$2.run(ProgressPane.java:84)
at java.lang.Thread.run(Thread.java:662)

I said: "Oh shit, another time..."

Well, I don´t know what´s the matter but i would be vey pleased if you could help me. I´m making this game for Dale Aceptar contest. Thank you.