thank you dear friend for your precious advice. i just updated my net framework from the official Microsoft website, but the game still crashes in public channel after some minutes of play, just like before. i'm still able to use the hack in co-op or infection channels for many hours without any problem. but one thing is sure: there is no anti kick anti report function in this version 1.7, the proof: i have been kicked many times. and i also imagine .. i have been reported.
thank you very much. i appreciate your help.