Problem moving my ms install

We built a new MS site for a school and are trying to move it to the web root to push it live but I can’t log in. I just get redirected back. If I enter a bogus password it barks at me that the password is wrong and that “cookies are blocked or not supported in your browser” but that’s not accurate. I’ve cleared the cache, cookies, etc. multiple times but still not go.

We built it with MS option for subdirectories and built itself in a subdirectory:
/public_html/staging/’wp install is here’
So the URL we’ve used for testing has been:
http://www.serendipityschool.com/staging
and so we have blogs like:
http://www.serendipityschool.com/staging/kindergarten

Now we just want to move it all up a level to:
/public_html/’wp install is here’
so the URL becomes
http://www.serendipityschool.com/
and the blogs become
http://www.serendipityschool.com/’classroom-name’

I used BackupBuddy for the migration and that seems to be OK. The site appears and the menu links and images work.

I edited my htaccess to remove my rewrite_base declaration so it doesn’t rewrite to /staging/

I edited my wp-config.php so $base=””
I try to edit my ‘PATH_CURRENT_SITE’ but if I change that to anything other than ‘/staging/’ I get a DB connection error.

I renamed the actual staging directory to ensure that it wasn’t accidentally serving up stuff from inside that directory.

Any ideas would be appreciated.

Thanks,
Colin