Error:

----------------------------------------------------------------------------------- java.lang.NullPointerException at java.util.Hashtable.put(Unknown Source) at javax.swing.text.SimpleAttributeSet.addAttribute(Unknown Source) at javax.swing.text.StyleConstants.setFontFamily(Unknown Source) at com.youngthink.aibehavior.client.ui.REG010.<clinit>(REG010.java:86) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at com.youngthink.aibehavior.client.ap.main.ApplicationFrame.initialDialogFunction(ApplicationFrame.java:149) at com.youngthink.aibehavior.client.ap.main.ApplicationFrame.preLoadServicesbeforeLogin(ApplicationFrame.java:183) at com.youngthink.aibehavior.client.ap.main.ApplicationFrame.setToolMenubeforeLogin(ApplicationFrame.java:347) at com.youngthink.aibehavior.client.ap.main.Main.processType1(Main.java:101) at com.youngthink.aibehavior.client.ap.main.Main.initGUI(Main.java:240) at com.youngthink.aibehavior.client.ap.main.Main.<init>(Main.java:74) at com.youngthink.aibehavior.client.ap.main.Main.main(Main.java:321) 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.zerog.lax.LAX.launch(DashoA8113) at com.zerog.lax.LAX.main(DashoA8113)