I am a Calculus Teacher at the High School. I have been using the Team Board Draw program for years to teach my course. I just had my laptop reimaged and had to load the Team Board Draw program back to my laptop. Now when I open up my old lessons in Team Board Draw it either says "Failed to open Workbook" and /or their is nothing but one blank page. Please help, this would be a lot of work to lose all these lessons.