Random crashes

[pietin1]

I've been having numerous crashes over the past several days. They are occurring at random times while performing various activities. The most recent happened as I was trying to log in. The crash report is below.

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:420)
at haven.HavenPanel.run(HavenPanel.java:455)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at haven.Utils.imgsz(Utils.java:54)
at haven.Button.draw(Button.java:91)
at haven.SIWidget.draw(SIWidget.java:42)
at haven.SIWidget.draw(SIWidget.java:48)
at haven.Widget.draw(Widget.java:514)
at haven.Widget.draw(Widget.java:519)
at haven.LoginScreen.draw(LoginScreen.java:421)
at haven.Widget.draw(Widget.java:514)
at haven.Widget.draw(Widget.java:519)
at haven.RootWidget.draw(RootWidget.java:131)
at haven.UI.draw(UI.java:165)
at haven.HavenPanel.redraw(HavenPanel.java:298)
at haven.HavenPanel$1.display(HavenPanel.java:94)
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$500(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)