I have a newly setup wordpress multi-site that is working fine. But when I activate the Domain Mapping plug-in I can no longer access the Network administration screens (xyz.com/wp-admin). I can still access the sites and their admin pages (such as siteA.xyz.com and siteA.xyz.com/wp-admin).
I have to go into the plugin directory and delete the Domain Mapping plugin folder to get access to the network admin screens.
Has anyone else had this issue?