@armandmorin: if you’re still having this issue, i think the problem may be in the theme heading. If you are creating a new theme from the buddypress theme pack, then adding ‘Template: bp-default’ to your theme header *should* resolve this issue. Hope this helps!
/*
Theme Name: Minimal-BP (BuddyPress BuddyPack)
Theme URI: http://www.goldratio.org
Description: A theme from Gold Ratio Designs
Version: 1.2
Author: J.Y.
Author URI: http://goldratio.org
Template: bp-default
Tags: buddypress, ,two-columns, minimal
*/
