Bug 97523 [Import/Export] Get overwrite prompt before no resources selected prompt
3.1 RC1 - File > Export > Archive - clear any selected resources - enter an archive file name where the file already exists - Finish - it prompts to overwrite the file; choose Yes - it says "There are no resources currently selected for export" (OK) Should get the "no resources" prompt first, and not bother with the second one. Should check the other export wizards too.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceExportPage1.java
protected void createOptionsGroupButtons(Group optionsGroup) {
        Font font = optionsGroup.getFont();
        createOverwriteExisting(optionsGroup, font);
        createDirectoryStructureOptions(optionsGroup, font);
    }
    /**
     * Create the buttons for the group that determine if the entire or
     * selected directory structure should be created.
     * @param optionsGroup
     * @param font
     */
    protected void createDirectoryStructureOptions(Composite optionsGroup, Font font) {
        
        createDirectoryStructureButton = new Button(optionsGroup, SWT.RADIO
                | SWT.LEFT);
        createDirectoryStructureButton.setText(DataTransferMessages.FileExport_createDirectoryStructure);
        createDirectoryStructureButton.setSelection(false);
        createDirectoryStructureButton.setFont(font);
        
        createSelectionOnlyButton = new Button(optionsGroup, SWT.RADIO
                | SWT.LEFT);
        createSelectionOnlyButton.setText(DataTransferMessages.FileExport_createSelectedDirectories);
        createSelectionOnlyButton.setSelection(true);
        createSelectionOnlyButton.setFont(font);
    }
    /**
     * Create the button for checking if we should ask if we are going to
     * overwrite existing files.
     * @param optionsGroup
     * @param font