When I try to remove a module from a suite, I get the following NPE in 5.0 beta2:

java.lang.NullPointerException
	at
org.netbeans.spi.project.support.ant.EditableProperties.put(EditableProperties.java:212)
	at
org.netbeans.modules.apisupport.project.ui.customizer.ModuleProperties.storePlatform(ModuleProperties.java:192)
	at
org.netbeans.modules.apisupport.project.ui.customizer.SuiteProperties.storeProperties(SuiteProperties.java:151)
	at
org.netbeans.modules.apisupport.project.ui.customizer.SuiteCustomizer.storeProperties(SuiteCustomizer.java:53)
	at
org.netbeans.modules.apisupport.project.ui.customizer.BasicCustomizer$1.run(BasicCustomizer.java:168)
	at org.openide.util.Mutex.writeAccess(Mutex.java:324)
	at
org.netbeans.modules.apisupport.project.ui.customizer.BasicCustomizer.save(BasicCustomizer.java:166)
	at
org.netbeans.modules.apisupport.project.ui.customizer.BasicCustomizer$OptionListener.actionPerformed(BasicCustomizer.java:231)
	at
org.netbeans.modules.project.uiapi.CustomizerDialog$OptionListener.actionPerformed(CustomizerDialog.java:134)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
	at
javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
	at java.awt.Component.processMouseEvent(Component.java:5488)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3093)
	at java.awt.Component.processEvent(Component.java:5253)
	at java.awt.Container.processEvent(Container.java:1966)
	at java.awt.Component.dispatchEventImpl(Component.java:3955)
	at java.awt.Container.dispatchEventImpl(Container.java:2024)
	at java.awt.Component.dispatchEvent(Component.java:3803)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
	at java.awt.Container.dispatchEventImpl(Container.java:2010)
	at java.awt.Window.dispatchEventImpl(Window.java:1766)
	at java.awt.Component.dispatchEvent(Component.java:3803)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
	at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234)
	at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

With an earlier (post-beta, pre-beta2) build of NetBeans 5.0, trying to remove a
module from a suite caused a different exception (FileNotFoundException) having
to do with several files being under source control and, therefore, read-only.

The exception occurs after clicking the OK button to leave the suite's
Properties dialog, (i.e., not when clicking the Remove button itself).