run xith3d demo error --$1$KeyboardEventListener

help,
(I come from china,ugly English. hope some one understand me!)
I can run some simple demo,

but run others ,happens

Exception in thread “main” java.lang.NoClassDefFoundError: com/xith3d/test/Xith3
DTexture3DCoordTest$1$KeyboardEventListener
at com.xith3d.test.Xith3DTexture3DCoordTest.init(Xith3DTexture3DCoordTes
t.java:201)
at com.xith3d.test.Xith3DTexture3DCoordTest.main(Xith3DTexture3DCoordTes
t.java:271)

I can find this class-----com/xith3d/test/Xith3DTexture3DCoordTest$1$KeyboardEventListener in xith3d.jar,
why i get this problem? keyEvent and MouseEvent

someone help me ?
Thanks!

No problem with your english, I understand it ;).
See if xith3d.jar is in more than one place in the classpath.

Does anyone else know?

see
http://www.java-gaming.org/cgi-bin/JGNetForums/YaBB.cgi?board=xith3d;action=display;num=1110120845

and
http://www.java-gaming.org/cgi-bin/JGNetForums/YaBB.cgi?board=xith3d;action=display;num=1069557326;start=30#30

I had the same problem.
I got around it by compiling the demos myself.
It seems something to do with inner classes having inconsistent class names (2 $ signs versus 1)

ie,
DTexture3DCoordTest$1KeyboardEventListener
DTexture3DCoordTest$1$KeyboardEventListener

Thank you very much!