I'm not quite a ViaCAD Pro newbie, but many of you here are light years ahead of my experience... So,I have very general question, and than a very specific question:
1) Is there a complete list of error messages description for ViaCAD Pro - something that might help me by explaining an error message and suggesting a likely resolution to the error?
2) I have a simple drawing that includes a b-spline connected to a line. The line is tangential to the end point of the spline. If I extrude a pipe along the spline, and then on to the line with the same Pipe tool, the line fails to extrude with the message "vectors not perpendicular". If I extrude a pipe staring with the line, I am successful, and the spine extrudes fine, too. What is the difference, and why the error?

Thanks very much!

Brian