Bug 114648 export file system/archive wizard initally has error when no selection seeded
Make sure nothing is selected in your Navigator or Package Explorer. File > Import/Export Select Archive or File System BUG: there is initially an error - There are no resources currently selected for export. There should not initially be an error in these wizards.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardResourceImportPage.java
import org.eclipse.ui.model.WorkbenchLabelProvider;
import org.eclipse.ui.model.WorkbenchViewerSorter;
/**
 * The abstract superclass for a typical import wizard's main page.
 * <p>
 * Clients may subclass this page to inherit its common destination resource
 * selection facilities.
 * </p>
 * <p>
 * Subclasses must implement 
 * <ul>
 *   <li><code>createSourceGroup</code></li>
 * </ul>
 * </p>
 * <p>
 * Subclasses may override
 * <ul>
 *   <li><code>allowNewContainerName</code></li>
 * </ul>
 * </p>
 * <p>
 * Subclasses may extend
 * <ul>
 *   <li><code>handleEvent</code></li>
 * </ul>
 * </p>
 */
public abstract class WizardResourceImportPage extends WizardDataTransferPage {
    private IResource currentResourceSelection;