#534 error at settings saving

[Anonymous]

program.name=DocFetcher
program.version=1.1.7
program.build=20130408-2002
program.portable=true
java.runtime.name=Java(TM) SE Runtime Environment
java.runtime.version=1.7.0_21-b11
java.version=1.7.0_21
sun.arch.data.model=32
os.arch=x86
os.name=Windows 7
os.version=6.1
user.language=en
java.lang.IllegalStateException: Display has already been initialized.
at net.sourceforge.docfetcher.util.AppUtil.ensureNoDisplay(AppUtil.java:191)
at net.sourceforge.docfetcher.util.AppUtil.showStackTraceInOwnDisplay(AppUtil.java:453)
at net.sourceforge.docfetcher.gui.Application.saveSettingsConfFile(Application.java:369)
at net.sourceforge.docfetcher.gui.Application.access$1600(Application.java:99)
at net.sourceforge.docfetcher.gui.Application$14.update(Application.java:857)
at net.sourceforge.docfetcher.gui.Application$14.update(Application.java:855)
at net.sourceforge.docfetcher.util.Event.doFireUpdate(Event.java:172)
at net.sourceforge.docfetcher.util.Event.fire(Event.java:165)
at net.sourceforge.docfetcher.gui.SearchBar$5$1.update(SearchBar.java:110)
at net.sourceforge.docfetcher.gui.SearchBar$5$1.update(SearchBar.java:108)
at net.sourceforge.docfetcher.util.Event.doFireUpdate(Event.java:172)
at net.sourceforge.docfetcher.util.Event.fire(Event.java:165)
at net.sourceforge.docfetcher.gui.pref.PrefDialog$5.widgetSelected(PrefDialog.java:190)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at net.sourceforge.docfetcher.gui.pref.PrefDialog.open(PrefDialog.java:217)
at net.sourceforge.docfetcher.gui.SearchBar$5.widgetSelected(SearchBar.java:113)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at net.sourceforge.docfetcher.gui.Application.main(Application.java:326)
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 net.sourceforge.docfetcher.Main.main(Main.java:32)