Just using Nested Content for first time. All works fine except when nothing has been entered by the editor. I get YSOD about Value cannot be null. Parameter name: source on the "@if" line below:-

var straplines = Model.GetPropertyValue<IEnumerable<IPublishedContent>>("Straplines");

                @if(straplines.Count() > 0) {
                    foreach (var item in straplines) {
                        <li>'@item.GetPropertyValue("strapline")' <span class="accreditation">@item.GetPropertyValue("attribution")</span></li>
                    }
                }

Can't check for .HasValue or .HasProperty, or .IsNull as the IEnumerable doesn't allow it, which is why I tried "Count()" as "Any()" didn't work either.

Any advice would be appreciated.

Thanks,

Craig