How to build and run community edition

I've tried to build and run IDEA master (commit 801a96bde2437675c9eae4ce1ee21e56e7ca581b) with beta 1 (UE), but I get NPEs everywhere. Cannot open or create a new project. How can I make this work?

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Here is the exception I get when I try to open an existing project:

Error during dispatching of java.awt.event.MouseEvent[MOUSE_CLICKED,(148,331),absolute(148,353),button=1,modifiers=Button1,clickCount=1] on frame1
java.lang.NullPointerException
 at com.intellij.openapi.progress.util.ProgressWindow$MyDialog.initDialog(ProgressWindow.java:410)
 at com.intellij.openapi.progress.util.ProgressWindow$MyDialog.<init>(ProgressWindow.java:406)
 at com.intellij.openapi.progress.util.ProgressWindow.<init>(ProgressWindow.java:100)
 at com.intellij.openapi.application.impl.ApplicationImpl.runProcessWithProgressSynchronously(ApplicationImpl.java:472)
 at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcessWithProgressSynchronously(ProgressManagerImpl.java:246)
 at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcessWithProgressSynchronously(ProgressManagerImpl.java:241)
 at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcessWithProgressSynchronously(ProgressManagerImpl.java:232)
 at com.intellij.openapi.project.impl.ProjectManagerImpl.loadProjectWithProgress(ProjectManagerImpl.java:478)
 at com.intellij.openapi.project.impl.ProjectManagerImpl.loadProjectWithProgress(ProjectManagerImpl.java:465)
 at com.intellij.openapi.project.impl.ProjectManagerImpl.loadAndOpenProject(ProjectManagerImpl.java:448)
 at com.intellij.openapi.project.impl.ProjectManagerImpl.loadAndOpenProject(ProjectManagerImpl.java:428)
 at com.intellij.ide.impl.ProjectUtil.openProject(ProjectUtil.java:165)
 at com.intellij.ide.impl.ProjectUtil.openOrImport(ProjectUtil.java:108)
 at com.intellij.ide.actions.OpenProjectAction.actionPerformed(OpenProjectAction.java:54)
 at com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreen$ActionGroupDescriptor$3.onPress(WelcomeScreen.java:219)
 at com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreen$ButtonWithExtension.onPress(WelcomeScreen.java:833)
 at com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreen$ActionGroupDescriptor$2.mouseClicked(WelcomeScreen.java:155)
 at java.awt.Component.processMouseEvent(Component.java:6351)
 at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
 at java.awt.Component.processEvent(Component.java:6113)
 at java.awt.Container.processEvent(Container.java:2085)
 at java.awt.Component.dispatchEventImpl(Component.java:4714)
 at java.awt.Container.dispatchEventImpl(Container.java:2143)
 at java.awt.Component.dispatchEvent(Component.java:4544)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4618)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4291)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212)
 at java.awt.Container.dispatchEventImpl(Container.java:2129)
 at java.awt.Window.dispatchEventImpl(Window.java:2475)
 at java.awt.Component.dispatchEvent(Component.java:4544)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:635)
 at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:606)
 at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:498)
 at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:371)
 at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
 at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

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Exception when creating new project is similar:

Error during dispatching of java.awt.event.MouseEvent[MOUSE_CLICKED,(205,235),absolute(205,257),button=1,modifiers=Button1,clickCount=1] on frame1
java.lang.NullPointerException
 at com.intellij.openapi.progress.util.ProgressWindow$MyDialog.initDialog(ProgressWindow.java:410)
 at com.intellij.openapi.progress.util.ProgressWindow$MyDialog.<init>(ProgressWindow.java:406)
 at com.intellij.openapi.progress.util.ProgressWindow.<init>(ProgressWindow.java:100)
 at com.intellij.openapi.application.impl.ApplicationImpl.runProcessWithProgressSynchronously(ApplicationImpl.java:472)
 at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcessWithProgressSynchronously(ProgressManagerImpl.java:246)
 at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcessWithProgressSynchronously(ProgressManagerImpl.java:241)
 at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcessWithProgressSynchronously(ProgressManagerImpl.java:232)
 at com.intellij.ide.impl.NewProjectUtil.createNewProject(NewProjectUtil.java:60)
 at com.intellij.ide.actions.NewProjectAction.actionPerformed(NewProjectAction.java:29)
 at com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreen$ActionGroupDescriptor$3.onPress(WelcomeScreen.java:219)
 at com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreen$ButtonWithExtension.onPress(WelcomeScreen.java:833)
 at com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreen$ActionGroupDescriptor$2.mouseClicked(WelcomeScreen.java:155)
 at java.awt.Component.processMouseEvent(Component.java:6351)
 at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
 at java.awt.Component.processEvent(Component.java:6113)
 at java.awt.Container.processEvent(Container.java:2085)
 at java.awt.Component.dispatchEventImpl(Component.java:4714)
 at java.awt.Container.dispatchEventImpl(Container.java:2143)
 at java.awt.Component.dispatchEvent(Component.java:4544)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4618)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4291)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212)
 at java.awt.Container.dispatchEventImpl(Container.java:2129)
 at java.awt.Window.dispatchEventImpl(Window.java:2475)
 at java.awt.Component.dispatchEvent(Component.java:4544)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:635)
 at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:606)
 at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:498)
 at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:371)
 at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
 at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

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Try to enable UI Designer plugin and rebuild project after restart of IDEA.

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