Gaurav Gupta created NETBEANS-1193:
--------------------------------------

             Summary: Unable to open any xml file in the IDE
                 Key: NETBEANS-1193
                 URL: https://issues.apache.org/jira/browse/NETBEANS-1193
             Project: NetBeans
          Issue Type: Bug
          Components: editor - Code folding
    Affects Versions: 9.0
            Reporter: Gaurav Gupta


Step to reproduce :
Project Node > Maven Project > Right click > Open POM
or directly drop any external xml in the IDE


NetBeans IDE info : 
{noformat}
Product Version: Apache NetBeans IDE 9.0 (Build 
incubator-netbeans-release-334-on-20180708)
Java: 10.0.2; Java HotSpot(TM) 64-Bit Server VM 10.0.2+13
Runtime: Java(TM) SE Runtime Environment 10.0.2+13
System: Windows 10 version 10.0 running on amd64; Cp1252; en_US (nb)
User directory: C:\Users\jGauravGupta\AppData\Roaming\NetBeans\9.0
Cache directory: C:\Users\jGauravGupta\AppData\Local\NetBeans\Cache\9.0
{noformat}

Stacktrace :
{code:java}
java.lang.NullPointerException
        at 
org.netbeans.modules.editor.fold.ui.CodeFoldingSideBar.resolveBackColor(CodeFoldingSideBar.java:350)
        at 
org.netbeans.modules.editor.fold.ui.CodeFoldingSideBar.updateColors(CodeFoldingSideBar.java:365)
        at 
org.netbeans.modules.editor.fold.ui.CodeFoldingSideBar.access$200(CodeFoldingSideBar.java:99)
        at 
org.netbeans.modules.editor.fold.ui.CodeFoldingSideBar$2.preferenceChange(CodeFoldingSideBar.java:228)
        at 
org.netbeans.modules.editor.fold.ui.CodeFoldingSideBar.addNotify(CodeFoldingSideBar.java:284)
        at java.desktop/java.awt.Container.addNotify(Container.java:2798)
        at java.desktop/javax.swing.JComponent.addNotify(JComponent.java:4783)
        at 
org.netbeans.modules.editor.impl.CustomizableSideBar$WestSidebarHolder.addNotify(CustomizableSideBar.java:286)
        at java.desktop/java.awt.Container.addNotify(Container.java:2798)
        at java.desktop/javax.swing.JComponent.addNotify(JComponent.java:4783)
        at java.desktop/java.awt.Container.addNotify(Container.java:2798)
        at java.desktop/javax.swing.JComponent.addNotify(JComponent.java:4783)
        at java.desktop/java.awt.Container.addNotify(Container.java:2798)
        at java.desktop/javax.swing.JComponent.addNotify(JComponent.java:4783)
        at java.desktop/java.awt.Container.addImpl(Container.java:1144)
        at java.desktop/java.awt.Container.add(Container.java:995)
        at 
org.openide.text.CloneableEditorInitializer.initCustomEditor(CloneableEditorInitializer.java:523)
        at 
org.openide.text.CloneableEditorInitializer.initCustomEditorAndDecorationsInEDT(CloneableEditorInitializer.java:573)
[catch] at 
org.openide.text.CloneableEditorInitializer.run(CloneableEditorInitializer.java:321)
        at 
org.openide.text.CloneableEditorInitializer.processPendingEDTRequests(CloneableEditorInitializer.java:135)
        at 
org.openide.text.CloneableEditorInitializer$1.run(CloneableEditorInitializer.java:84)
        at 
org.netbeans.core.windows.WindowManagerImpl$Exclusive$1.run(WindowManagerImpl.java:1546)
        at 
java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
        at 
java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
        at java.desktop/java.awt.EventQueue.access$600(EventQueue.java:97)
        at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
        at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at 
java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
        at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740)
        at 
org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
        at 
java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
        at 
java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
        at 
java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
        at 
java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
        at 
java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
        at 
java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

{code}




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