Build: NetBeans IDE Dev (Build 201508300002)
VM: Java HotSpot(TM) 64-Bit Server VM, 25.60-b23, Java(TM) SE Runtime Environment, 1.8.0_60-b27
OS: Windows 10

User Comments:
GUEST: Create an HTML5 project with same name as a PHP project

zdenek.rod: I clicked by righ mouse button in editor.

GUEST: simply opened ide

skygo: during project opening after upgrading netbeans from dev 20150827 to 20150830

GUEST: just launch netbeans

GUEST: Just hanged




Stacktrace: 
java.lang.AssertionError: Somebody changed internal state meanwhile!
Expected: Inited: true
Thread: Thread[org.netbeans.modules.project.ui.ProjectTab,1,system]
InProgress: true
MustNotify: false
Entries: 5; vis. entries: 5; Infos: 5; entriesSize: 5; entryToInfoSize: 5
1 entry Children.Keys.KE[S\modules\clusters\petshop\petshop.plugin\petshoplogrest\src@a44d9714:618eb15,0],0] -> EntryInfo for entry: Children.Keys.KE[S\modules\clusters\petshop\petshop.plugin\petshoplogrest\src@a44d9714:618eb15,0],0], node: null
2 entry Children.Keys.KE[dules\clusters\petshop\petshop.plugin\petshoplogrest\target@2a5948c1:3e686d68,0],0] -> EntryInfo for entry: Children.Keys.KE[dules\clusters\petshop\petshop.plugin\petshoplogrest\target@2a5948c1:3e686d68,0],0], node: null
3 entry Children.Keys.KE[\petshop\petshop.plugin\petshoplogrest\nb-configuration.xml@bbefe954:18cd64d2,0],0] -> EntryInfo for entry: Children.Keys.KE[\petshop\petshop.plugin\petshoplogrest\nb-configuration.xml@bbefe954:18cd64d2,0],0], node: null
4 entry Children.
   at org.openide.nodes.EntrySupportLazy.setState(EntrySupportLazy.java:87)
   at org.openide.nodes.EntrySupportLazy.removeEntries(EntrySupportLazy.java:817)
   at org.openide.nodes.EntrySupportLazy.setEntries(EntrySupportLazy.java:463)
   at org.openide.nodes.EntrySupport.setEntries(EntrySupport.java:83)
   at org.openide.nodes.Children$Keys$2.run(Children.java:1573)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation$1Exec.run(DefaultMutexImplementation.java:1016)