admin login

[Macho]

Hi,

ispCP was working fine for about a moth.
But yesterday I have changed IP addresses of my dns servers (I have external dns servers).
Now I can't login with admin user. I can login as reseler or any other user.
When I try to login with admin user, browser think for about 1 minute and then get following error: "MySQL server has gone away". But at the same time I recieve email, that admin have logged in successfully.
Please help me resolve this problem.
Thanks.