Launchers Not Launching

Some of my .desktop launchers aren't working. When I try to execute it from the main menu nothing happens. When I try to launch it from a terminal I get the following:

$ /usr/share/applications/qjoypad.desktop
/usr/share/applications/qjoypad.desktop: line 1: [Desktop: command not found
/usr/share/applications/qjoypad.desktop: line 8: Utility: command not found

Here are the contents of the launcher:

[Desktop Entry]
Version=1.0
Name=QJoyPad
Exec=/usr/games/qjoypad
Icon=/usr/share/pixmaps/qjoypad/gamepad2-24x24.png
Terminal=false
Type=Application
Categories=Game;Utility;

File permissions:

$ ls -l /usr/share/applications | grep -i qjoy
-rwxr-xr-x 1 root root   173 Mar 10  2010 qjoypad.desktop

I have not edited the file since I installed the package. It was working 2 days ago. Not sure what caused the change. Most of my other launchers work fine.

I am on Linux Mint 15 64-bit:

$ uname -r
3.8.0-19-generic

--- Edit ---

Actually, it doesn't look like any of my launchers can be executed from a terminal. How can I figure out why it's not launching from the system menu?

--- Edit ---

I can launch it from the file manager (Nemo). (forgot to mention I'm using Cinnamon desktop)

--- Solved ---

Right-clicked on main menu button and selected "Edit menu". Then I hit "Restore System Configuration". Now it's working.