When I deleted it i got this
Warning: require_once(/home/backbac2/public_html/wp-content/plugins/buddypress/bp-themes/bp-default/_inc/ajax.php) [function.require-once]: failed to open stream: No such file or directory in /home/backbac2/public_html/wp-content/plugins/bp-template-pack/bp-template-pack.php on line 20
Fatal error: require_once() [function.require]: Failed opening required ‘/home/backbac2/public_html/wp-content/plugins/buddypress/bp-themes/bp-default/_inc/ajax.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/backbac2/public_html/wp-content/plugins/bp-template-pack/bp-template-pack.php on line 20
If this is the same Speed theme I’ve seen before, double-check if the theme has been updated to be compatible with BP 1.2.9 and again if it’s the same Speed theme I’ve seen before, you do not need to install the BP Template Pack plugin for this theme because it already contains BP Template files. Therefore errors come up because of outdated theme and installing BP template pack for theme which already has BP template files – outdated those may be.