SQL Developer error

./sqldeveloper.sh

 Oracle SQL Developer
 Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.

UIDefaults.getUI() failed: no ComponentUI class for: oracle.ide.controls.StatusBarControl$JDevStatusBar[,0,0,0x0,invalid,alignmentX=0.0,alignmentY=0.0,border=,flags=0,maximumSize=,minimumSize=,preferredSize=]
java.lang.Error
	at javax.swing.UIDefaults.getUIError(UIDefaults.java:730)
	at javax.swing.MultiUIDefaults.getUIError(MultiUIDefaults.java:130)
	at javax.swing.UIDefaults.getUI(UIDefaults.java:760)
	at javax.swing.UIManager.getUI(UIManager.java:1016)
	at oracle.bali.ewt.statusBar.StatusBar.updateUI(StatusBar.java:480)
	at oracle.bali.ewt.statusBar.StatusBar.<init>(StatusBar.java:104)
	at oracle.ide.controls.StatusBarControl$JDevStatusBar.<init>(StatusBarControl.java:264)
	at oracle.ide.controls.StatusBarControl.<init>(StatusBarControl.java:48)
	at com.oracle.jdeveloper.nbwindowsystem.NbMainWindow$13.<init>(NbMainWindow.java:1098)
	at com.oracle.jdeveloper.nbwindowsystem.NbMainWindow.createStatusBar(NbMainWindow.java:1098)
	at oracle.ide.IdeMainWindow.getStatusBar(IdeMainWindow.java:626)
	at com.oracle.jdeveloper.nbwindowsystem.NbMainWindow.getStatusBarStatic(NbMainWindow.java:228)
	at com.oracle.jdeveloper.nbwindowsystem.NbStatusBar.getStatusLineElement(NbStatusBar.java:23)
	at org.netbeans.core.windows.view.ui.MainWindow$7.run(MainWindow.java:405)
	at org.netbeans.core.windows.view.ui.MainWindow.getStatusLineElements(MainWindow.java:417)
	at org.netbeans.core.windows.view.ui.MainWindow.decoratePanel(MainWindow.java:371)
	at org.netbeans.core.windows.view.ui.MainWindow.access$100(MainWindow.java:81)
	at org.netbeans.core.windows.view.ui.MainWindow$2.run(MainWindow.java:269)
	at org.netbeans.core.windows.WindowManagerImpl$Exclusive$1.run(WindowManagerImpl.java:1563)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)