Animation assets plays in preview but not on play

I have a skeletal mesh with an imported animation asset. When i preview the animation in the skeletal mesh editors the animation plays as intended.

But when i play the game nothing happens and the mesh stays still.

I tried changing some settings but nothing seemed to have any effect. The mesh component update flag is set to “always tick pose and update bones”. I also re imported the assets.

I’m out of idea’s how i could debug this so i’m hoping someone here can help me find the solution.

This happened after updating to unreal 4.11 (from 4.10).