Boundary surface glitch?

ok so i have this model I am creating, like many many beforeI am using a boundary suface to create the basic shape.
The boundary surface is telling me I cannot use a mix of curves butyet I have created the curves the same way as I always do everysingle time. I use 2 sketches projected to create the top curve and2 sketches projected to create the bottom curve. then I use 3dcurves as the guide curves to control the shape.

I am using swx2008
SolidworksSurfacing