There was a scripting error on the ski scene coming down the Falsen Mts that was introduced after the test pass had gotten past that part :( The bug would have manifested as an error dialog that pops up just as you start skiing and would have made it difficult\impossible to do the skiing scene. 3.27 should remove the error and let you progress past that point.
I'll continue to watch for errors in telemetry and fix them if they come up. Thanks to everyone for playing and bearing with me as things get polished out. I really appreciate your help and enthusiasm for the game!