Rotation issue with generator

[nicolaj.h.andersen@gmail.com]

Hi

I have a Bezier spline, all normals pointin out (y direction) and it is not moving in z direction.
I then wish to create a specified GameObject on the cube, but when doing this it rotates the GameObject around y so the orientation no longer is correct.

i can se the same happens if i use "Quaternion.LookRotation(splineCurve.GetTangentByDistance(distanceAndOffset,Space.World))" then it turns the GameObject also on the y axis.
so the problem seems to be the spline but i cannot se the problem or what settings i should tweek.

do someone have an idea how to fix this

best regards 
Nicolaj