Can anyone help me

I can play FM2013 until today when there is an error message "missing executable" was shown. I can enter into the steam program but I cannot launch the game as usual. I have not change any settings in the steam so can anyone help me to find out the problem. Is I need to reinstall the steam or not....

Try re-installing FM13, if you can load up steam but not FM then it's a problem with the game itself, not Steam. If that doesn't work, you can still try re-installing Steam.

I have reinstall the steam and FM today but I still cannot get into the game!!! This time the error message is "unable to find some essential data".....

Try doing this:

• Open Steam
• Go to your Library tab
• Right click Football Manager 2013 and click on Properties (very bottom)
• In the new pop-out box, go to the "Local Files" tab
• Click on "Validate Integrity Of Game Cache"

Once you have done this, just wait for the validation to finish, even if it does take a very long time. This has fixed quite a lot of problems encountered on starting the game. However, I cannot say for certain that this will work as I have seen some situations where people have tried this but the problem still persists. If this does not work, contact Stam and I'm sure that he may have a solution for you.