Rust startup crash

So i got Rust like 2 days ago and i installed it right away legacy works fine,but when i try to play the normal rust it opens the screen where i can select my resolution,when i click Play it just opens and closes right away.Any idea anyone???

this happens to me. put a formal ticket request thru to facepunch studios, attach your output_log from the clientdata folder in rust folder in steam.

solved problem by complete uninstallation of comodo firewall