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
currentResourceSelection = (IResource) resource;
            }
        }
        if (currentResourceSelection != null) {
            if (currentResourceSelection.getType() == IResource.FILE)
                currentResourceSelection = currentResourceSelection.getParent();
            if (!currentResourceSelection.isAccessible())
                currentResourceSelection = null;
        }
    }
    /**
     * The <code>WizardResourceImportPage</code> implementation of this 
     * <code>WizardDataTransferPage</code> method returns <code>true</code>. 
     * Subclasses may override this method.
     */
    protected boolean allowNewContainerName() {
        return true;
    }
    /** (non-Javadoc)
     * Method declared on IDialogPage.
     */
    public void createControl(Composite parent) {
        initializeDialogUnits(parent);
        Composite composite = new Composite(parent, SWT.NULL);
        composite.setLayout(new GridLayout());
        composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL
                | GridData.HORIZONTAL_ALIGN_FILL));
        composite.setSize(composite.computeSize(SWT.DEFAULT, SWT.DEFAULT));
        composite.setFont(parent.getFont());
        createSourceGroup(composite);