I can't play - haven error!

[Nibelung]

When I press 'Play', client game crashes with this error:

java.lang.RuntimeException: java.lang.NullPointerException
at com.jogamp.common.util.awt.AWTEDTExecutor.invoke(AWTEDTExecutor.java:58)
at jogamp.opengl.awt.AWTThreadingPlugin.invokeOnOpenGLThread(AWTThreadingPlugin.java:103)
at jogamp.opengl.ThreadingImpl.invokeOnOpenGLThread(ThreadingImpl.java:206)
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:172)
at javax.media.opengl.Threading.invoke(Threading.java:191)
at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:528)
at haven.HavenPanel.uglyjoglhack(HavenPanel.java:412)
at haven.HavenPanel.run(HavenPanel.java:445)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at haven.Sprite.create(Sprite.java:112)
at haven.Composited$SpriteEqu.<init>(Composited.java:193)
at haven.Composited$SpriteEqu.<init>(Composited.java:188)
at haven.Composited.nequ(Composited.java:345)
at haven.Composited.changes(Composited.java:362)
at haven.Composited.changes(Composited.java:366)
at haven.Composited.setup(Composited.java:370)
at haven.RenderList.setup(RenderList.java:98)
at haven.RenderList.add(RenderList.java:135)
at haven.Composite.setup(Composite.java:65)
at haven.Gob.setup(Gob.java:204)
at haven.RenderList.setup(RenderList.java:98)
at haven.RenderList.add(RenderList.java:135)
at haven.MapView.addgob(MapView.java:444)
at haven.MapView$3.setup(MapView.java:453)
at haven.RenderList.setup(RenderList.java:98)
at haven.RenderList.add(RenderList.java:135)
at haven.MapView.setup(MapView.java:515)
at haven.PView$1.setup(PView.java:198)
at haven.RenderList.setup(RenderList.java:98)
at haven.RenderList.setup(RenderList.java:123)
at haven.PView.draw(PView.java:222)
at haven.MapView.draw(MapView.java:814)
at haven.Widget.draw(Widget.java:514)
at haven.Widget.draw(Widget.java:519)
at haven.GameUI.draw(GameUI.java:469)
at haven.Widget.draw(Widget.java:514)
at haven.Widget.draw(Widget.java:519)
at haven.RootWidget.draw(RootWidget.java:61)
at haven.UI.draw(UI.java:139)
at haven.HavenPanel.redraw(HavenPanel.java:293)
at haven.HavenPanel$1.display(HavenPanel.java:91)
at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:649)
at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:633)
at javax.media.opengl.awt.GLCanvas$9.run(GLCanvas.java:1271)
at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1103)
at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:978)
at javax.media.opengl.awt.GLCanvas$10.run(GLCanvas.java:1282)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Please help me!

[Nibelung]

I don't know what happened but now game works.