BuddyPress.org

@Jivany thanks for the suggestion, though I’m still doing something wrong. Here’s what I have:

<li<?php if ( bp_is_page( BP_ACTIVITY_SLUG ) || bp_is_page( BP_MEMBERS_SLUG ) || bp_is_page( BP_GROUPS_SLUG ) || bp_is_page( BP_FORUMS_SLUG || bp_is_group() || bp_is_member() ) : ?> class="selected"<?php endif; ?>>

In the php error log it says there was an unexpected :