I can’t get Domain Mapping to work for a WordPress (Version 3.4.1) Multisite using the popular Plugin “WordPress MU Domain Mapping” found here:
http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/

I am the Super Admin and there are no other Admins in the Network.

The WordPress install is hosted at WHH. The Domain is registered with another registrar.

The Multisite Network uses Subfolder Structure. I want to change http://networkname.com/blogname
to
http://blogname.com

The DNS at the registrar were changed to
ns1.webhostinghub.com
ns2.webhostinghub.com

The Domain was added in the WP MS with corresponding correct ID#.
______________________

Testing the URL blogname.com, no result in my Browser.

I contacted the WHH Support and was informed I had to add the Domain as an Addon Domain. Is this correct? Again I’m using the popular Plugin for Domain Mapping.

I added the Domain blogname.com as an Addon Domain with no Redirection.
______________________

Testing the URL blogname.com, I get a
Index of/cgi-bin/
for the folder created for the Addon Domain instead of a redirect to http://networkname.com/blogname.

What am I doing wrong? Thanks a lot!