ERROR on view group page

http://deciphagear.com/dolphin/grp.php?action=group&ID=1

no
Warning: Cannot modify header information - headers already sent by (output started at /home/.manet/deciphagear/deciphagear.com/dolphin/inc/classes/BxDolGroups.php:426) in /home/.manet/deciphagear/deciphagear.com/dolphin/inc/design.inc.php on line 495

What can I do to fix this?

It seems you have edited the file inc/classes/BxDolGroups.php

Replace from new pack.

Regards,

Praveen

http://www.dolphinpros.com