i cant press replay ..... well i can press it when i have driven but it keeps say: the replay wont be saved.
why the hell does it do that ???

Do you have disabled replay in options / game menu ?

U cant save a replay when you have gone into pits

i only have the demo but .. by 2 days ago i could see replay as i would .... ??

Quote from i need speed :

i only have the demo but .. by 2 days ago i could see replay as i would .... ??

now iam in game S2 but still cant see any replay ???? it says . the replay wont be saved........ whhyyyy ??

If you go into the pits (by the escape menu or shift+s) you cannot save a replay. Check in your options, make sure replays are enabled.