Domain Mapping Not Appearing In Subsite Tools Menu

Hello There,

I have just installed a fresh install of Wordpress multisite. I have only installed the WPMU Domain Mapper plugin and I have followed the instructions perfectly.

The problem I have is 'Domain Mappings' does not appear in the tools menu of my sub sites.

I can see the configuration menu under settings on the network master site, but when I switch to a sub site it is no where to be seen.

Pease advise.