Animation is sometimes rotated

[Vinstand]

Hello,
I made a new Skeletal Mesh in order to make true first person. This Mesh uses the standard SK_Mannequin Skeletal.
The Problem is, that some Animations work normal, like idle:

But some do not, because the mesh is rotated, like running:

I don´t know what the problem is, but it´s not the animation itself, because the running animation is working completely fine on SKM_Manny:

Can someone please help me with this, because i have no clue how to solve this.

[Vinstand]

I have finally found a solution. It now works after I rotated the mesh in Blender, where I had removed the arms and the head, by -90 degrees. At first I didn’t think that was the problem because one of the animations worked (I still don’t understand why)