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
IResource resource = workspace.getRoot().findMember(path);
        	if(resource.getType() == IResource.FILE)
        		return null;
        	return (IContainer) resource;
        	
        }
            
        return null;
    }
    /**
     * Returns a collection of the currently-specified resource types for
     * use by the type selection dialog.
     */
    protected java.util.List getTypesToImport() {
        return selectedTypes;
    }
    /**
     * Opens a container selection dialog and displays the user's subsequent
     * container resource selection in this page's container name field.
     */
    protected void handleContainerBrowseButtonPressed() {
        
        IPath containerPath = queryForContainer(getSpecifiedContainer(),
                IDEWorkbenchMessages.WizardImportPage_selectFolderLabel,
                IDEWorkbenchMessages.WizardImportPage_selectFolderTitle);
        
        if (containerPath != null) { 
            setErrorMessage(null);
            containerNameField.setText(containerPath.makeRelative().toString());
        }