I've succeed to load a dropdown gender list from member, and stored it with membership with use og this preValueHelper from this site: http://www.codeshare.co.uk/blog/how-to-use-an-umbraco-data-type-to-populate-an-mvc-drop-down-list/

I now try to fill the gender dropdownlist like I do with preValueHelper before creating values in membership (and it works), but now I try to fill the same gender dropdownlist, but selected with the stored model.SelectedGender, but only get a "Error loading Partial View script" (no error when loading dropdown with preValueHelper).

Umbraco version 7.6.1 .

MODEL:
public IEnumerable<SelectListItem> ListOfGenders { get; set; }
public string SelectedGender { get; set; }


VIEW:
@Html.DropDownListFor(x => x.SelectedGender, Model.ListOfGenders, "-- Select --", new { @class = "form-control" })


SURFACECONTROLLER:
private PreValueHelper preValueHelper = new PreValueHelper();

[ChildActionOnly]
public ActionResult ReadHiker(HikerViewModel model)
{
    if (this.Members.IsLoggedIn() && this.Members.IsMemberAuthorized(allowTypes: new[] { "hiker" }))
    {
        IMember memberService = Services.MemberService.GetByEmail(this.Members.CurrentUserName);

        foreach (SelectListItem gender in preValueHelper.GetPreValuesFromDataTypeId(1176))
        {
            preValueHelper.GetPreValuesFromDataTypeId(1176).Add(new SelectListItem()
            {
                Text = gender.Text,
                Value = gender.Value,
                Selected = gender.Value == memberService.GetValue("gender").ToString() ? true : false
            });
        }
        //model.ListOfGenders = ____?? fill in the foreach loop above ??____

        //This line works fine for prevalues from membership without selected value
        //model.ListOfGenders = preValueHelper.GetPreValuesFromDataTypeId(1176);

        //These two fields also in the model, and it's rendering in view as it should.
        model.Mobile = memberService.GetValue("mobile").ToString();
        model.Biography = memberService.GetValue("biography").ToString();
    }
    return PartialView("UpdateHiker", model);
}

I also suspect that the view may be incorrect (I've modified the SelectListItem above several times.

Model must be defined i surfacecontroller, and loaded into view, so how do I bind model.ListOfGender in SurfaceController into view this time?

@Html.DropDownListFor(x => x.SelectedGender, Model.ListOfGenders, "-- Select --", new { @class = "form-control" })

Any ideas?