Out of paper error even when sprocket is loaded with paper

[RTRAJ9]

Hello, the aporcket refuses to print my photos and keeps showing the "out of paper" error even when half full. I have also tried opening a new pack of the sheets and it still won't print. I also tried resetting the sprocket but nothing seems to help. Any input would be appreciated. 

[Bob_Headrick]

The Zink paper may curl at the edges, making it not feed properly.  Try the following:  put a sheet of the paper on a flat surface and make sure it lies flat.  If the edges are curled up or down roll the paper in the opposite direction to make it lie flat, then reload it in the printer.

It also may help to load the blue sheet as shown in the document here.