I'm selling texture , then some one named g0b buy one , he sent me PM ,
I'm trying to sent the texture but then. ........

g0b has chosen not to receive private messages or may not be allowed to receive private messages. Therefore you may not send your message to him/her.

If you are trying to send this message to multiple recipients, remove g0b from the recipient list and send the message again

This thing happened , he's reporting me , Help !

Tell him to go to: http://forum.toribash.com/profile.php?do=editoptions and tick 'Enable Private Messaging'

Wait , if this happen , why can he PM me ?

what do you mean hes reporting you?

He think i scam him , but i just can't sent my texture to him

So, you are saying that he sent you a PM that he wants your texture. but when you were going to send him the texture, this thing appeared.

Is that it?

Then probably he disabled his private messaging.

Wild Guess: I think he doesn't want your texture anymore.

I think thats the point.
try to send him an email.

If he knows the e-mail

g0b is currently banned. Wait until he is not banned.

so i cannot sent it to him ? he's NOT EXISTING