Welcome to SW forums Maarten
The issues have already been listed in the error message so first of all check them all. If you still feel you can't make it work, please attach your file here to check.
BTW what was the dia value you kept.
Also read this post for your future reference: Forum Posting
For Sweep command it is necessary that the path must intersect the plane of the profile. Does your 3d line Sketch starts or ends in different place. Make sure line end is exactly at the center of the circle.
Just looking at the sketch, it appears the profile (circle) is too big. It would cause the inside radii of the path to be self-intersecting.