Server Crash to desktop no error message

[009]

Some times i make a Tranning server, where ppl can come and practic such as Tranning, and i name server "Tranning server" ^_^
And some times it crash, so it crash to desktop with no error message.
Why ?

 

[Fire Phoenix]

Because of the esf 1.2.1 bug that crashes the server. can't do anything until esf beta 1.2.2. comes out which is in testing right now