Here's there error report. Any help would be much appreciated.
javax.media.opengl.GLException: haven.GOut$GLException: GL Error: 1280 (invalid enumerant)
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271)
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)
at haven.HavenPanel.uglyjoglhack(HavenPanel.java:380)
at haven.HavenPanel.run(HavenPanel.java:414)
at java.lang.Thread.run(Unknown Source)
Caused by: haven.GOut$GLException: GL Error: 1280 (invalid enumerant)
at haven.GOut.checkerr(GOut.java:84)
at haven.GLState$Applier.apply(GLState.java:469)
at haven.GOut.apply(GOut.java:160)
at haven.PView.draw(PView.java:154)
at haven.MapView.draw(MapView.java:647)
at haven.Widget.draw(Widget.java:454)
at haven.Widget.draw(Widget.java:459)
at haven.GameUI.draw(GameUI.java:310)
at haven.Widget.draw(Widget.java:454)
at haven.Widget.draw(Widget.java:459)
at haven.RootWidget.draw(RootWidget.java:61)
at haven.UI.draw(UI.java:134)
at haven.HavenPanel.redraw(HavenPanel.java:268)
at haven.HavenPanel$1.display(HavenPanel.java:88)
at com.sun.opengl.impl.GLDrawableHelper.display(GLDrawableHelper.java:78)
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:435)
at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(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)