[build 08100740, JDK 1.3.1]

Every first attempt to open Properties window throws exception
MissingResourceExc. When you dismiss the window then properties can be opened
for second time. If you do the same for different locale then behavior is same:
exception and for 2nd time window is opened
Steps to reproduce:
1. Create new locale for properties file in MemoryView.
2. Open default locale -> exception is thrown. Close Exc. window.
3. Open default locale. It is opened.
4. Try to open newly created locale -> Exception is thrown, dismiss it.
5. Open newly created locale. It is opened.

You can repeat those steps and behavior is same.

Stack trace:
Fri Aug 10 10:50:55 CEST 2001: java.util.MissingResourceException: Missing
resource from class: java.util.PropertyResourceBundle
Annotation: Missing resource from class: java.util.PropertyResourceBundle
Annotation: Key which was not found: LAB_EditorName_Uptodate
java.util.MissingResourceException: Can't find resource for bundle
java.util.PropertyResourceBundle, key LAB_EditorName_Uptodate
        at java.util.ResourceBundle.getObject(ResourceBundle.java:382)
        at java.util.ResourceBundle.getString(ResourceBundle.java:354)
        at org.openide.util.NbBundle.getMessage(NbBundle.java:400)
        at org.openide.util.NbBundle.getMessage(NbBundle.java:463)
        at org.openide.util.NbBundle.getMessage(NbBundle.java:415)
        at
org.netbeans.modules.properties.PropertiesOpen$PropertiesCloneableTopComponent.setName(PropertiesOpen.java:671)
        at
org.netbeans.modules.properties.PropertiesOpen$PropertiesCloneableTopComponent.initialize(PropertiesOpen.java:573)
        at
org.netbeans.modules.properties.PropertiesOpen$PropertiesCloneableTopComponent.<init>(PropertiesOpen.java:559)
        at
org.netbeans.modules.properties.PropertiesOpen.createCloneableTopComponent(PropertiesOpen.java:136)
        at
org.openide.windows.CloneableOpenSupport.openCloneableTopComponent(CloneableOpenSupport.java:157)
[catch] at
org.openide.windows.CloneableOpenSupport$1.run(CloneableOpenSupport.java:67)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:337)
        at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
        at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)