Login Connection Error

Okay, I don't have a picture yet of this but if it does happen I'll put it on here but when trying to login I get passed the Authentication Successful, checking login queue... then it changes to logging in and then the connection error appears on the screen closing the client. I reopen to login again and it logs in just fine so I don't know what causes it because my internet would be working fine and other things are open and running so just heads up.

I'll post the picture when I can.

~Katasumai