Development build #200606010200 of NetBeans 5.5
JDK 1.6.0, VM b84

Description:
============
NPE appeared during deleting project. 
1) New project, select General - JavaApplication, next, mark Set as Main
Project, deselect Create Main Class, finish

2) TestPackages - new JFrame Form, finish
3) insert some swing component into layout, e.g. JRadioButton, then try to Run
Main Project (F6). Dialog will appear with message "Project does not have main
class set". Click cancel.
4) Then try to delete project completely (without marked attribute "also delete
source" ) and NPE will occure

StackTrace
===========
java.lang.NullPointerException
[catch] at
org.netbeans.modules.form.FormEditorSupport$3.run(FormEditorSupport.java:314)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:598)

All stackTrace is in attachment