In my mouse handling code I call drawable.display() to update my image.  I'm getting a weird error about surface locking.  Any ideas on what's going wrong?


net.java.games.jogl.GLException: Surface already unlocked
     at net.java.games.jogl.impl.windows.WindowsOnscreenGLContext.unlockSurface(WindowsOnscreenGLContext.java:192)
     at net.java.games.jogl.impl.windows.WindowsOnscreenGLContext.free(WindowsOnscreenGLContext.java:134)
     at net.java.games.jogl.impl.GLContext.invokeGL(GLContext.java:203)
     at net.java.games.jogl.GLCanvas.displayImpl(GLCanvas.java:182)
     at net.java.games.jogl.GLCanvas.display(GLCanvas.java:82)
     at JOGLstructuredArguments.ArgTreeViewRenderer.mouseMoved(ArgTreeViewRenderer.java:524)