I’ve upgrade WP and BP, then I have an error about forum :
Warning: Cannot modify header information – headers already sent by (output started at /wp-content/plugins/buddypress/bp-themes/bp-default/header.php:44) in /wp-content/plugins/buddypress/bp-forums/bb-config.php on line 10

Upgrade from :
– WordPress … 3.1.1 => 3.7.1
– BuddyPress … 1.2.8 => 1.8.1

Do you have some ideas to solve this error?

[@modemlooper Moderator 11 years, 1 month ago]

EEK!

There have been many changes between these versions. Did you by chance backup your database before upgrade? You need to do an incremental upgrade. Also, current BP doesn’t use it’s own forum anymore and you have to install bbPress separately.

https://codex.buddypress.org/getting-started/upgrading-buddypress/

[@ryoheis Participant 11 years, 1 month ago]

@modemlooper

Thank you for your comment.
I’ve recognized many changes in newer version, but I tried. And I have backup MySQL too, so I’ll try once again. “incremental upgrade” you mean, upgrade from 1.2.x => 1.5 is maybe OK?

[@modemlooper Moderator 11 years, 1 month ago]

yes, step through each upgrade but current BP you may need to install bbPress and then convert forums

[@ryoheis Participant 11 years, 1 month ago]

Thank you so much. I understand and try you told me.