Multi-DB Tables Copied Successfully but won't run

Hi,

Hey, I just set up a 256 DB version of Multi-DB. on WPMU v2.6.3 using the latest control

Man, that was a LOT of work

As my last step I copied over db.php and db-config.php

Now it's dying in wpmu_settings.php function wpmu_current_site

die( "No WPMU site defined on this host. If you are the owner of this site, please check Debugging WPMU for further assistance." );

At that point I echoed out the following vars
Sitedomain=[com],currentsite=[]

When I rename db.php to db.ZZZphp it all works fine again.

I am using a lot of domain mapping.

Any ideas what to check next?

Thanks,

..Mike