Roger,
I might be wrong but I don't think splines work in the Part Editor, they must be converted to a series of arcs. You can create a tool using splines in the Shape Manager and the tool will work in the Part Editor but the geometry won't.
Kerry
Apparently, the spline tool does not work properly within eCabs, as it is not supported in the program. I found several threads that address this issue. Click on the links:
I found a utility addon for autocad it's called \"splineConvert\" it does what the name says, convert's splines into arcs so it can now be imported to the shape manager, here's the link: http://www.xanadu.cz/en/download.asp?fi ... ,%20trial)