My Mission Control is not working. Any help?

Everytime I click in Mission control in the Dock it does nothing, it seems like is disabled.
But when I swipe down with 4 fingers my opened windows appears, except the Desktops.
Help please.
Thanks!

Software Issues - Troubleshooting
Try a restart.
Do a backup, using either Time Machine or a cloning program, to ensure files/data can be recovered. Two backups are better than one.
Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.
Isolating an issue by using another user account
Try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear and again when you log in. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer. For each disable/delete, you will need to restart if you don’t do them all at once.
Safe Mode - Mavericks
Safe Mode - About

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Hi all,
I have recently Reformatted my mac and made it into 1 partition of 500gb just to run mac os x. I did it with the discs the laptop came with.
After OSx install was complete, I ran the os x lion downloaded from the app store and installed it too. After completely updating the system with software updates and my other software like ms office, vlc, flash, iLife etc.
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My Mission Control is not working. Any help?

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