Error in jme3test.tools.TestSaveGame

I copied the source into my project and i get this error:

java.lang.StringIndexOutOfBoundsException: String index out of range: 1

at java.lang.String.charAt(String.java:686)

at java.util.regex.Matcher.appendReplacement(Matcher.java:703)

at java.util.regex.Matcher.replaceAll(Matcher.java:813)

at java.lang.String.replaceAll(String.java:2189)

at jme3tools.savegame.SaveGame.saveGame(SaveGame.java:41)

at BasicGame.TestSaveGame.simpleInitApp(TestSaveGame.java:67)

at com.jme3.app.SimpleApplication.initialize(SimpleApplication.java:231)

at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:129)

at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:205)

at java.lang.Thread.run(Thread.java:662)



In the TestChooser the program also crashs. I have the newest nightly build.