(145/308) 1246 - JavaScriptShell: NPE in JavaScriptShell.init()

With jEdit trunk r16502, I got the following exception
while activating JavaScriptShell plugin.
(Taken by pressing \[Install\] button on Plugin Manager)

> ....\.jedit\jars\JavaScriptShell.jar:
> Cannot start: java.lang.NullPointerException
> Try updating to a newer version of the plugin.

> java.lang.NullPointerException
> at javascriptshell.JavaScriptShell.init(JavaScriptShell.java:71)
> at javascriptshell.JavaScriptShellPlugin.<init>(JavaScriptShellPlugin.java:33)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
> at java.lang.reflect.Constructor.newInstance(Unknown Source)
> at java.lang.Class.newInstance0(Unknown Source)
> at java.lang.Class.newInstance(Unknown Source)
> at org.gjt.sp.jedit.PluginJAR.activatePlugin(PluginJAR.java:735)
> at org.gjt.sp.jedit.PluginJAR.activatePluginIfNecessary(PluginJAR.java:823)
> at org.gjt.sp.jedit.pluginmgr.Roster.performOperationsInAWTThread(Roster.java:137)
> at org.gjt.sp.jedit.pluginmgr.InstallPanel$InstallButton.actionPerformed(InstallPanel.java:925)
> at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
> at ... (snip)

JavaScriptShell plugin 0.3
jEdit trunk r16502
JRE 6u15
Windows XP

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