Problem solved. Wierd disk space problem

[Metal Gear Awesome <skial>]

Steam is not letting me play TF2 because it says I don't have enough disk space. I have over 350 gigs free on my hard drive. I recently bought a new game but that has been running fine. Any guesses as to my problem?
EDIT: All my other games run fine

 

[Sir Gooch P Tigglington]

You probably already did so, but make sure you've verified and defragged your game files from within Steam.

If neither of those help, try re-installing Steam and make ABSOLUTELY sure you have enough free space. I'm seeing a lot of threads on the Steam forums from people who were like "I have plenty of space" and then later go "LOL JKJK, I WUZ TRYIN TUH INSTALL TO A DIFFERENT DRIVE"

I also found one thread where some guy said that the shortcut to his TF2 install got broken and for some reason he got the same disk space error. If you are using shortcuts to launch the game, try launching it directly from Steam instead.

 

[Metal Gear Awesome <skial>]

Thanks!

 

[Sir Gooch P Tigglington]

For anyone who might have this problem in the future, could you tell us which one of those solutions worked?