(Help)Problem in operation 7

I try to run operation 7 but i cant when ever i join in a channel it says

Disconnected from server
Please Log in again

I logged in again But Still it didnt work Help!!!!

Try Re-Installing.
/Moved to Op7 General.

If reinstalling doesnt help try running as admin? seems to solve most problems with win7/vista if thats your os

it was a maintence! thats why ...