I managed with some difficulty to land that station on Minmus : http://kilobug.net/ksp.png

But it doesn't validate the contract "build a new outpost that has an antenna, a docking port and can generate power", does anybody knows why ?

It has a docking port between the landing engines/legs, just under the big solar panel, it has an antenna just in front (which works fine, transmitted a lot of science with it) and many solar panels, big and small.

Is it a new craft? It must have been launched after accepting the contract to be valid.

Didn't know there was a "Outpost" type, I'll try that tonight, thanks !

And I did wait several days to fill the ore containers (another requirement is that I had 2000 ores on it, this is validated). Yes, it's a new craft, built and launched after I accepted the contract.

Thanks, that was it ! Didn't know that the game really cared about the type.