I just installed the Domain Mapping plugin by Donncha. I installed it by looking it up in the plugins directory and auto-installing it through the Wordpress MU admin area. I haven't set anything up with it yet, but it appears to be working (or atleast installed and activated).
My question came after I reviewed the installation instructions at...
http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/installation/
...on this page there are a series of steps. I followed them and it appeared to break my site. So, I reverted back to before I followed the above instructions.
My question is that if you use the auto-installer via the Wordpress Plugins area, do you need to also follow the instructions on the plugin page or does the auto-installer handle everything that's necessary? The Sunrise file, etc. were not copied over...so I am questioning whether or not I have this installed properly.
Thanks!