BuddyPress.org

I’ve never used the Template Pack before, but a quick glance at the code shows that it is looking for the JS that is included in bp-default, unless you have selected the Disable BP Template Pack JS / AJAX on the Dashboard page. Have you done so? When you look at the page source for the activity page, do you see the javascript being loaded in the document head? Is the path to the javascript file /bp-themes/bp-default/_inc/global.js correct? Does BP_PLUGIN_DIR . ‘/bp-themes/bp-default/_inc/ajax.php’ exist on your system?