4.11: Some Missions Locking-Up

[yeikov]

In case it helps, I've attached the mission that caused my lock ups in 4.11.1 (generated by DCG 3.47 beta6).
I've run it 3 times now, 2 times it locked up after ~30 min flying, the other time I tried the workaround explained by Jameson here and it did not.

Thanks for the support, and for the great work you're doing!