BuddyPress.org

Well… the new default theme is pretty different from the old default theme. The templates are structured in a completely new (and better) way. I had built a child theme off the old default… and it took a fair bit of work to get the same child theme working with the new default. I imagine that any plugin which relied on you adding a folder full of template to your theme (like bp-events for instance) will have some issues with BP1.2 and the default theme. Unless the compatibility thing Andy is talking about will address that too.