Yarn Demo 11/17/2012 11AM-Noon 45 minute cowl

I worked the demo this morning. I checked the gauge to be correct 11 single crochet = 8 1/2 inches with 2 strands of Lion Brand Amazing. I was not able to complete the project as written with one ball of yarn. DId anyone else run into this situation? It was a quick and easy project to do. Very attractive icompleted n this yarn.