Sparkplug_kit_2_0_7 didn''t work

i had downloaded the newest sparkplug kit version 2.0.7. i want to try to run startup.bat, but it give me error like this :

MAIN_IMAGE not found.

Exception in thread “AWT-EventQueue-0” java.lang.NullPointerException

at org.jivesoftware.LoginDialog$ImagePanel.getPreferredSize(LoginDialog.

java:815)

at java.awt.GridBagLayout.GetLayoutInfo(Unknown Source)

at java.awt.GridBagLayout.getLayoutInfo(Unknown Source)

at java.awt.GridBagLayout.preferredLayoutSize(Unknown Source)

at java.awt.Container.preferredSize(Unknown Source)

at java.awt.Container.getPreferredSize(Unknown Source)

at javax.swing.JComponent.getPreferredSize(Unknown Source)

at javax.swing.JRootPane$RootLayout.preferredLayoutSize(Unknown Source)

at java.awt.Container.preferredSize(Unknown Source)

at java.awt.Container.getPreferredSize(Unknown Source)

at javax.swing.JComponent.getPreferredSize(Unknown Source)

at java.awt.BorderLayout.preferredLayoutSize(Unknown Source)

at java.awt.Container.preferredSize(Unknown Source)

at java.awt.Container.getPreferredSize(Unknown Source)

at java.awt.Window.pack(Unknown Source)

at org.jivesoftware.LoginDialog.invoke(LoginDialog.java:155)

at org.jivesoftware.Spark.(Spark.java:39)

at org.jivesoftware.Spark$1.run(Spark.java:151)

at java.awt.event.InvocationEvent.dispatch(Unknown Source)

at java.awt.EventQueue.dispatchEvent(Unknown Source)

at java.awt.EventDispatchThread.pumpOneEventForHierarchy(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)

anyone has any suggestion?? thnx for ur attention