If you try to select a tool from the toolbar while working with a book, web journal, web gallery, or light table, Aperture will sound a system beep, and the tool won't be selected.
This happens because adjustment tools are not available when working with these types of albums. You can access the tools by clicking the "Show viewer for this Browser" button to toggle between the viewer and the layout, thus editing the image without having to leave the album in the project list.
- In the browser, select the thumbnail for the image you wish to adjust.
- Click the "Show Viewer for this Browser" button near the top-left of the Browser.
Your selected image replaces the page (or light table) in the Viewer.
This issue is resolved in Aperture 3