cutting out material between two cross sections...

Hello to all again...I need further assistance with an existing project.  In the attached document, I need the space between "3DSKetch4" and 3DSketch6" cut away.  I thought a lofted cut was the way to go, but I keep getting the message that it would create intersecting geometry, and I'm not sure of how to fix/interpret that.  Thanks in advance for your help!SolidworksGeneral