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via eclipse-cs by the_olo
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This exception has no message.
java.lang.NullPointerException: 	at org.eclipse.jface.dialogs.DialogPage.getShell(DialogPage.java:293)	at com.atlassw.tools.eclipse.checkstyle.properties.CheckstylePropertyPage.setElement(CheckstylePropertyPage.java:182)	at org.eclipse.ui.internal.dialogs.RegistryPageContributor.createPage(RegistryPageContributor.java:137)	at org.eclipse.ui.internal.dialogs.PropertyPageNode.createPage(PropertyPageNode.java:56)	at org.eclipse.jface.preference.PreferenceDialog.createPage(PreferenceDialog.java:1306)	at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.createPage(FilteredPreferenceDialog.java:369)