Animation doesn't load on startup

Basicly I try to play an anim Montage on my character. It doesn’t work in standalone game. It also doesn’t work in the editor, till I preview it (open it up for editing). Then the anim works.

Is there any way to specify which animations should load on startup?

If anyone has the same problem, it was caused by the fact, that the animations were pointed to by a TAssetPtr, which you have to load on your own. I changed it to a hard pointer and now it’s working.