I see you already have your hands full with the new BuddyPress update.
After updating to BP 1.5 the login link at the top right takes you to the BuddyPress Members Directory page. The url seems to be correct http://mysavehereclub.com/login/ . I can only login via the admin bar which the url is http://mysavehereclub.com/wp-login.php?redirect_to=http%3A%2F%2Fmysavehereclub.com .
In addition, once you're logged in the "welcome back" message at the top right displays "Welcome back, http://mysavehereclub.com/members/terryg/" instead of the user name. The code looks like this:
<div class="user-tab">Welcome back, http://mysavehereclub.com/members/terryg/</div>
This only happens on the Blogs MU theme site, which is the BuddyPress site. Is this a theme issue or a BuddyPress 1.5 issue? I'm hoping it's a simple theme update.