For some unexplained reason I get this message;

 

 

 

Uncaught Exception! This shouldn't happen!
(SCE Version: 1.1.2)
Please copy the contents of this box to a support request
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

    at Main.main(Main.java:50)

Caused by: java.lang.reflect.InvocationTargetException

    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 Main.main(Main.java:38)

Caused by: java.lang.NoSuchFieldError: completionKey

    at sun.nio.fs.WindowsNativeDispatcher.initIDs(Native Method)

    at sun.nio.fs.WindowsNativeDispatcher.<clinit>(Unknown Source)

    at sun.nio.fs.WindowsLinkSupport.getRealPath(Unknown Source)

    at sun.nio.fs.WindowsPath.toRealPath(Unknown Source)

    at sun.nio.fs.WindowsPath.toRealPath(Unknown Source)

    at sun.util.calendar.ZoneInfoFile$1.run(Unknown Source)

    at sun.util.calendar.ZoneInfoFile$1.run(Unknown Source)

    at java.security.AccessController.doPrivileged(Native Method)

    at sun.util.calendar.ZoneInfoFile.<clinit>(Unknown Source)

    at sun.util.calendar.ZoneInfo.getTimeZone(Unknown Source)

    at java.util.TimeZone.getTimeZone(Unknown Source)

    at java.util.TimeZone.setDefaultZone(Unknown Source)

    at java.util.TimeZone.getDefaultRef(Unknown Source)

    at java.util.Calendar.getInstance(Unknown Source)

    at java.util.Formatter$FormatSpecifier.printDateTime(Unknown Source)

    at java.util.Formatter$FormatSpecifier.print(Unknown Source)

    at java.util.Formatter.format(Unknown Source)

    at java.util.Formatter.format(Unknown Source)

    at java.lang.String.format(Unknown Source)

    at sun.util.logging.PlatformLogger$DefaultLoggerProxy.format(Unknown Source)

    at sun.util.logging.PlatformLogger$DefaultLoggerProxy.doLog(Unknown Source)

    at sun.util.logging.PlatformLogger.warning(Unknown Source)

    at java.util.prefs.WindowsPreferences.<init>(Unknown Source)

    at java.util.prefs.WindowsPreferences.<clinit>(Unknown Source)

    at java.util.prefs.WindowsPreferencesFactory.userRoot(Unknown Source)

    at java.util.prefs.Preferences.userRoot(Unknown Source)

    at java.util.prefs.Preferences.userNodeForPackage(Unknown Source)

    at sce.util.Preferences.<clinit>(Preferences.java:26)

    at sce.swt.SceneryConfigEditor.setDefaultPositioning(SceneryConfigEditor.java:137)

    at sce.swt.SceneryConfigEditor.init(SceneryConfigEditor.java:188)

    at sce.swt.SceneryConfigEditor.main(SceneryConfigEditor.java:101)

    ... 5 more

Did some updates, now it works.