Error Opening Hammer. (Solved)

[Fantastic]

Crogram Files (x86)\Steam\steamapps\common\Team Fortress 2\tf\gameinfo.txt is missing.

Any solutions out there?

 

[nesman]

validate your game files through steam

 

[Fantastic]

validate your game files through steam

How exactly do I do that?

 

[nesman]

open steam > library > home > right click tf2 > local files > verify integrity of game files

 

[Fantastic]

open steam > library > home > right click tf2 > local files > verify integrity of game files

I tried that and still have the error.