Bug 6582 VMPreferencePage - CheckboxTableViewer has no columns anymore
20011204: CheckboxTableViewer has no more columns upon creation. You have to create the first column as well. I encountered the same problem in TemplatePreferencePage, because I used the same code as in VMPreferencePage.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/TemplatePreferencePage.java
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.ColumnWeightData;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableLayout;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.help.DialogPageContextComputer;
import org.eclipse.ui.help.WorkbenchHelp;
import org.eclipse.jdt.ui.JavaUI;
import org.eclipse.jdt.ui.text.JavaSourceViewerConfiguration;
import org.eclipse.jdt.ui.text.JavaTextTools;
import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.text.template.Template;
import org.eclipse.jdt.internal.ui.text.template.TemplateContentProvider;
import org.eclipse.jdt.internal.ui.text.template.TemplateContext;
import org.eclipse.jdt.internal.ui.text.template.TemplateLabelProvider;
import org.eclipse.jdt.internal.ui.text.template.TemplateMessages;
import org.eclipse.jdt.internal.ui.text.template.TemplateSet;
import org.eclipse.jdt.internal.ui.text.template.Templates;
import org.eclipse.jdt.internal.ui.util.SWTUtil;
public class TemplatePreferencePage	extends PreferencePage implements IWorkbenchPreferencePage {