install4jインストーラーがあり、「install4jウィザードの準備中」フェーズの最後で「...セットアップウィザードへようこそ」画面の直前で停止しています。これは、両方ともWindows 7を実行している2人の顧客（数千人中）で発生しました。これまでに発生したことはなく、install4jを長年使用しています。インストーラーがハングしません-キャンセルできます。止まるだけです。ログファイルの1つから次の情報を取得しました。確認済みの交換用CD等を発送しております。「管理者として実行」してみました。これを引き起こしている可能性があるものについて何か考えはありますか？
java.lang.NullPointerException
at java.awt.Dimension.<init>(Unknown Source)
at javax.swing.plaf.basic.BasicProgressBarUI.getPreferredSize(Unknown Source)
at javax.swing.JComponent.getPreferredSize(Unknown Source)
at java.awt.GridBagLayout.GetLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.getLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.preferredLayoutSize(Unknown Source)
at java.awt.Container.preferredSize(Unknown Source)
at java.awt.Container.getPreferredSize(Unknown Source)
at javax.swing.JComponent.getPreferredSize(Unknown Source)
at java.awt.GridBagLayout.GetLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.getLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.preferredLayoutSize(Unknown Source)
at java.awt.Container.preferredSize(Unknown Source)
at java.awt.Container.getPreferredSize(Unknown Source)
at javax.swing.JComponent.getPreferredSize(Unknown Source)
at java.awt.GridBagLayout.GetLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.getLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.ArrangeGrid(Unknown Source)
at java.awt.GridBagLayout.arrangeGrid(Unknown Source)
at java.awt.GridBagLayout.layoutContainer(Unknown Source)
at java.awt.Container.layout(Unknown Source)
at java.awt.Container.doLayout(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validate(Unknown Source)
at java.awt.Window.show(Unknown Source)
at java.awt.Component.show(Unknown Source)
at java.awt.Component.setVisible(Unknown Source)
at com.install4j.runtime.wizard.WizardBase.setVisible(Unknown Source)
at com.install4j.runtime.wizard.WizardBase.showFrame(Unknown Source)
at com.install4j.runtime.installer.frontend.WizardScreenExecutor.execute(Unknown Source)
at com.install4j.runtime.installer.controller.Controller$1.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
java.lang.NullPointerException
at java.awt.Dimension.<init>(Unknown Source)
at javax.swing.plaf.basic.BasicProgressBarUI.getPreferredSize(Unknown Source)
at javax.swing.JComponent.getPreferredSize(Unknown Source)
at java.awt.GridBagLayout.GetLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.getLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.preferredLayoutSize(Unknown Source)
at java.awt.Container.preferredSize(Unknown Source)
at java.awt.Container.getPreferredSize(Unknown Source)
at javax.swing.JComponent.getPreferredSize(Unknown Source)
at java.awt.GridBagLayout.GetLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.getLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.preferredLayoutSize(Unknown Source)
at java.awt.Container.preferredSize(Unknown Source)
at java.awt.Container.getPreferredSize(Unknown Source)
at javax.swing.JComponent.getPreferredSize(Unknown Source)
at java.awt.GridBagLayout.GetLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.getLayoutInfo(Unknown Source)
at java.awt.GridBagLayout.ArrangeGrid(Unknown Source)
at java.awt.GridBagLayout.arrangeGrid(Unknown Source)
at java.awt.GridBagLayout.layoutContainer(Unknown Source)
at java.awt.Container.layout(Unknown Source)
at java.awt.Container.doLayout(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validate(Unknown Source)
at com.install4j.runtime.wizard.StandardScreen$1.componentResized(Unknown Source)
at java.awt.Component.processComponentEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)