If you are using the launch thumbnail sidebar and you find that all your thumbnails link to the current page you are viewing and not the pages they should link to then this article will help you.
This problem is caused by a glitch in the system – if you are using the perpetual launch system without the gateway turned on. If you do not wish to use the gateway system (i.e. you want your pages to all be viewable at once), you will need to switch your launch type to “One-off/Timed” and ensure that all your pages are set to be live at the current time.
If not, you will find that once you activate the gateway system the sidebar thumbnails will work for both One-off/Timed and Perpetual/Evengreen Launch types.