BUG: "The Bulwark" doesn't start (+savegame)

The “Bulwark” mission on the Geoscape doesn’t start.
I sended my aircraft (with soldiers) to the location. When I click the “Start Mission”-button, then, … nothing happens.

Here is the savegame:


I second this, my game is the same. Tried several times.

have you guys used the in game bug reporter (F12) to report this?

Same here … does not start …

Same here. I had the mission for a long time, but on the opposite side of map. Today I got in and I cannot start the special mission.

I use the last version of the game at this moment [1.0.55275] en cannot start this mission.
Who ever managed to solve this problem?