Asterisk Desktop Manager

I don't know that this means, it just popup on my screen during my testing. I just installed the ADM and trying to figure out how it works.

java.lang.NullPointerException
at org.hamnett.adm.asterisk.gui.QuickDialAction.runWithEvent(QuickDialAction.java:114)
at org.hamnett.adm.gui.SystemTray$1.handleEvent(SystemTray.java:102)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968)
at org.hamnett.adm.gui.SystemTray.run(SystemTray.java:147)
at org.hamnett.adm.Main.startup(Main.java:302)
at org.hamnett.adm.Main.main(Main.java:99)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.exe4j.runtime.WinLauncher.main(Unknown Source)