UE4 crashes when working with Media

I currently want to realise a project in ue4 which is supposed to contain various MediaPlayers/Media Textures in widgets etc.
Unfortunately unreal always crashes immediately when I want to place my MediaPlayer somewhere or when I want to create an UI Material with the MediaTexture…
I tried using other versions of Unreal also but I keep having that problem. Does anyone know if there is something I can do about it?
Thanks a lot,

Have you tried HISPlayer Media Player?