java.lang.IllegalArgumentException: Already a MasterFileObject[/var/www/PhpProject1/nbproject/project.xml@3ee2e27:45f676cb,valid=true]
   at org.netbeans.spi.project.support.ant.ProjectGenerator$1.run(ProjectGenerator.java:0)
   at org.netbeans.spi.project.support.ant.ProjectGenerator$1.run(ProjectGenerator.java:0)
   at org.openide.util.Mutex.writeAccess(Mutex.java:0)
   at org.netbeans.spi.project.support.ant.ProjectGenerator.createProject0(ProjectGenerator.java:0)
   at org.netbeans.spi.project.support.ant.ProjectGenerator.createProject(ProjectGenerator.java:0)
   at org.netbeans.modules.php.project.util.PhpProjectGenerator.createProject0(PhpProjectGenerator.java:158)
   at org.netbeans.modules.php.project.util.PhpProjectGenerator.createProject(PhpProjectGenerator.java:117)
   at org.netbeans.modules.php.project.ui.wizards.NewPhpProjectWizardIterator.instantiate(NewPhpProjectWizardIterator.java:193)
   at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(TemplateWizard.java:0)
   at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:0)
   at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:0)
   at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:0)
   at org.openide.loaders.TemplateWizardIteratorWrapper.instantiate(TemplateWizardIteratorWrapper.java:0)
   at org.openide.WizardDescriptor.callInstantiateOpen(WizardDescriptor.java:0)
   at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:0)
   at org.openide.WizardDescriptor.access$1700(WizardDescriptor.java:0)
   at org.openide.WizardDescriptor$Listener$2$1.run(WizardDescriptor.java:0)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:0)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:0)