Heeeeeeeeeeeeelp! Cant Save Or Load!!!!!!!!!!

[F®eeman ™]

When I click "save game" a message appears : A necessary file cant read and the connection to the steam servers has been lost
PLS HELP ME!
I am playing the 12 lvl and right now i am deactivating some generators with the gravity gun ...If i start the chapter from the begining... PLS HELP ME!!!!!

 

[F®eeman ™]

Just realized that i cant even start the game from the .exe ... PLS NEED HELP!

 

[Beerdude26]

...What?

Are you using the cracked version?

 

[F®eeman ™]

Never mind.The problem 's gone.I can save and load now.I 've just finished the game!