Trying to get Multi-Domains to work with Domain Mapping


We've successfully mapped to

Trying to use Domain Mapping in conjunction with Multi-Domains, which as I understand it should be possible?

However, when I go to add a new site from the network admin dashboard (, and try to create I simply get redirected to the network admin dashboard.

I've installed the latest version of multi-domains (1.1.6) and domain mapping (3.0.7) and followed the installation instructions.

We are running WordPress 3.2.1 at present - could that be an issue?