Hello,
I have ver 18-20 bob cad.My problem is with ver 19&20 concerning 3d wire frame and rendering problems.When rotating a wire frame in ver18,it works perfectly.In 19 & 20,the wire frame flickers or dissapears when you revolve it.I was told by bob cad techs that the problem is inherant in the 19 & 20 versions due to using GDI intrface instead of open GL interface.I have tried turing my hardware acceleration up and down with only minimal improvements.they told me to maybe download a hot fix for GDI interface,but i cant find the exact thing there talking about. My operating system is windows pro sp-1.I have a late model laptop computer 2.8gigahertz pentium 4, with a invidia geforce fx go 5600 video card.Its not like im running an old clunker.... any assistance with this problem would be greatly apreciated. thanks,steve