I recently installed Crysis 3. It installed smoothly and my machine was able to handle it quite well. However upon initiation it gave an error basically it couldnt create a profile... the exact error was

(a CryEngine Error): [PlayerProfiles] CGameContext"::StartGame: No users logged in

I tried to create a profile but it it always gives another error and says "name not valid try again "no matter how many times i try...

I copied a profile from another computer which had the exact copy of crysis 3 and it worked for a while until i reached a checkpoint and now it cant save, it simply crashes and exits.
This very copy of crysis was installed on a pc with specs much lower than mine and it was able to create a profile there. What could be the problem here..... Anyone one out there help..... my email adress is silubpharm@gmail.com