Which software do you have. I have 4D QBot and upgraded to 4Dquilt Designer. If you have one of these, when opening the program, select 'New Work Area', and put in the width and height of your quilt area. open or insert a single design and resize it to fit the height of the frame. (All parts must be inside, not touching the frame). Drag to the left or right end, your starting end, make sure your starting point -green is first to sew- and the last point - red - sews last. Select this design and copy and paste another (you will have to go to the center of the frame and drag it back to the first one) When the first point is close enough, this design should join to the first. Repeat. I can tell you more if you care to pm me.
Cheers