Login issue

[bakers11]

Warning: Cannot modify header information - headers already sent by (output started at /home/alaska/public_html/core/modules/Schedules/Schedules.php:3) in /home/alaska/public_html/core/modules/Login/Login.php on line 136

any idea how to fix that

[James142]

Is commonly caused by whitespace in a php file in the core of the application. If it is only happening during login and logout one of those class files must have been edited and there is some whitespace prior to the opening php tag or an ending php tag has been added and there is whitespace after it.

http://forum.phpvms.net/topic/6895-logout-issue-and-a-login-issue/page__hl__%2Bmodify+%2Bheader+%2Binformation__fromsearch__1

Hope it helps