Okay!
I tried out something different:
I chose the female player in the beginning and - probably more important - did not land with the transfer ship on the planet while building up the mining station.
Now it worked out, without any sign of bugs.
I have now two mining stations (on Penelope and on one of the Klatoo moons, Katanga??
, well the one with Energon), two colonies (Mir and Apollo --> cheap wind energie) ready with medical plant and housing for 17k, New Earth is build up for about 55k people but without stadium and I just got the unknown device for 16k from the aliens on Jade. No sign of the Morgruls yet.
Thus the above strategy seems to work out quite well.
Look good, eh?
