At least I now had 12 failures in a row. The last two were M-BAD-C-1321495950-0-C and M-BAD-C-1018593372-0-C.
I had one that worked at the start but which I ended up not taking: M-BAD-C-1395999434-0-C
I have decided to give up on this planetoid for now.
Start new game with desolands cluster. See worldgen fail.