It isn't always easy to get vendors to be a part of a quilt show. Just because you invite them to come doesn't mean they are interested or that they aren't already booked during the dates of your show. Also, the size of the quilt show makes a difference. Our guild is having a quilt show the first weekend in October, and it has been challenging to find enough interested vendors, and our chairman started a year ago contacting folks. Our show isn't one of the large ones, and I am sure that is part of the reason.
So, the show may have wanted more vendors and it just didn't happen.
Dina