Hyperspaces is not showing a desktop picture when I login to my Mac

This problem occurs when Hyperspaces is set to Hide on login, and to use a Dock Icon — luckily there's an easy fix:

1. Go to "System Preferences → Accounts"
   
2. Ensure that your user account is selected in the list to the right of the window under "My Account"
   
3. Select the "Login Items" tab from the left-hand pane
   
4. Make sure that the checkbox next to "Hyperspaces" is not checked
   
5. Close "System Preferences"

Once you've done this, you should quit and re-open Hyperspaces — your desktop picture should now be visible.