java.lang.IllegalStateException: getInputStream invoked in AWT
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.getInputStream(FileObj.java:219)
   at org.openide.filesystems.MIMESupport$CachedFileObject.getInputStream(MIMESupport.java:402)
   at org.netbeans.modules.openide.filesystems.declmime.DefaultParser.parse(DefaultParser.java:134)
   at org.netbeans.modules.openide.filesystems.declmime.XMLMIMEComponent$SniffingParser.sniff(XMLMIMEComponent.java:266)
   at org.netbeans.modules.openide.filesystems.declmime.XMLMIMEComponent.acceptFileObject(XMLMIMEComponent.java:83)
   at org.netbeans.modules.openide.filesystems.declmime.MIMEResolverImpl$FileElement.resolve(MIMEResolverImpl.java:690)
   at org.netbeans.modules.openide.filesystems.declmime.MIMEResolverImpl$FileElement.access$800(MIMEResolverImpl.java:660)
   at org.netbeans.modules.openide.filesystems.declmime.MIMEResolverImpl$Impl.findMIMEType(MIMEResolverImpl.java:319)
   at org.openide.filesystems.MIMESupport$CachedFileObject.resolveMIME(MIMESupport.java:371)
   at org.openide.filesystems.MIMESupport$CachedFileObject.getMIMEType(MIMESupport.java:312)
   at org.openide.filesystems.MIMESupport.findMIMEType(MIMESupport.java:140)
   at org.openide.filesystems.FileUtil.getMIMEType(FileUtil.java:1481)
   at org.openide.filesystems.FileObject.getMIMEType(FileObject.java:585)
   at org.openide.loaders.DataLoaderPool.allLoaders(DataLoaderPool.java:332)
   at org.openide.loaders.DataLoaderPool.findDataObject(DataLoaderPool.java:530)
   at org.openide.loaders.DataLoaderPool.findDataObject(DataLoaderPool.java:493)
   at org.openide.loaders.DataObject.find(DataObject.java:528)
   at org.netbeans.modules.maven.model.Utilities$2.getLookup(Utilities.java:188)
   at org.openide.util.lookup.SimpleProxyLookup.checkLookup(SimpleProxyLookup.java:80)
   at org.openide.util.lookup.SimpleProxyLookup.lookup(SimpleProxyLookup.java:156)
   at org.netbeans.modules.maven.model.pom.POMModelFactory.getModel(POMModelFactory.java:79)
   at org.netbeans.modules.maven.customizer.CustomizerProviderImpl.init(CustomizerProviderImpl.java:186)
   at org.netbeans.modules.maven.customizer.CustomizerProviderImpl.showCustomizer(CustomizerProviderImpl.java:139)
   at org.netbeans.modules.maven.customizer.CustomizerProviderImpl.showCustomizer(CustomizerProviderImpl.java:134)
   at org.netbeans.modules.maven.customizer.CustomizerProviderImpl.showCustomizer(CustomizerProviderImpl.java:129)
   at org.netbeans.modules.project.ui.actions.CustomizeProject.actionPerformed(CustomizeProject.java:150)
   at org.netbeans.modules.project.ui.actions.LookupSensitiveAction.actionPerformed(LookupSensitiveAction.java:170)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2012)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2335)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:404)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:374)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:829)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:873)
   at java.awt.Component.processMouseEvent(Component.java:6268)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6033)
   at java.awt.Container.processEvent(Container.java:2045)
   at java.awt.Component.dispatchEventImpl(Component.java:4629)
   at java.awt.Container.dispatchEventImpl(Container.java:2103)
   at java.awt.Component.dispatchEvent(Component.java:4455)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4633)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4297)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4227)
   at java.awt.Container.dispatchEventImpl(Container.java:2089)
   at java.awt.Window.dispatchEventImpl(Window.java:2517)
   at java.awt.Component.dispatchEvent(Component.java:4455)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:649)
   at java.awt.EventQueue.access$000(EventQueue.java:96)
   at java.awt.EventQueue$1.run(EventQueue.java:608)
   at java.awt.EventQueue$1.run(EventQueue.java:606)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:116)
   at java.awt.EventQueue$2.run(EventQueue.java:622)
   at java.awt.EventQueue$2.run(EventQueue.java:620)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:619)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:162)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)