ive been using solidworks and solidworks simulation for a while now, but im very new to the use of flow simulation so ive bought a introductory text book as a reference to start using flow simulation

im running solidworks 2012 x64 and ive noticed that after i set up the simulation, SW immediately crashes when i try running it. I cant even save the part while im setting up the conditions because it crashes again. any idea whats going on? thanks