Membership Plugin - adding gateway,

Hallo

I'm trying to develop an additional gateway, eWay, for the membership plugin.

Yesterday it was going well, then not so well. I created a basic class in the gateways directory using bits and pieces from the other gateways. That was fine, showed up and I can activate it, go into settings and what not. Then last night I did something, i don't know what. but the settings page didn't show up. So i created a new gateway really basic, just to test the settings page, nothing. I'm having trouble, and can't see any reason why the settings wouldn't be showing.

I've taken it back to absolutely the minimum, just to show something on the settings page (code included), still nothing