Problem when modeling Arch Bridge by Ansys Workbench 14.0
 

I try to model an arch bridge by Ansys workbench 14.0. When i put a force to see how it solve, it doesn't run and shows an error. Can anyone help me how to fix this error.
P/s: Can you guy help me to change the element type of cables into Tension only element like Link 8? i dont know how to do it in Ansys workbench!

Here is my modeling http://www.mediafire.com/download/4lg295cv92fbrtt