Hey, I just installed VectorWorks 11.5 on our new imac 3.0 seemingly without a problem. BUT after I saved the first thing I worked on (an imported cad file) the next time I opened it the whole thing was shaded with tiny dots, lines and weird shapes! Now the entire application is corrupt with shading of different kinds all over the place. I am seriously concerned that this will spread into other applications and don't know what to do. Please help.