Supporter and Membership compatibility

The description of the supporter plug in says that it is compatible with the membership plug in on a multi site install. Combine the two and we can charge people via the supporter plug in to allow them to use the membership plug in to make money for them selves. Great idea, but having difficulty.

Both are installed. Limit Plugins is working fine on other plug ins. However, when a supporter tries to activate the membership plug in, the plug in reports being activated but does not add a menu item.

Suspected Problem:

The instructions for membership plug in say I must change the config file to reflect the site admin name. It is currently set for MY admin name. However, in a multi-site installation each blog has its own admin name. Could that be the challenge?