3D Sections with Lofted Surfaces

I encountered a problem using Autocad 2012 when trying to make a 3D section from a drawing that contains a lofted surface. The surface either won’t show in the section where it should show as a section line or projection, or—even more frequently—will cause Autocad to crash showing this error message: ‘FATAL ERROR: Unhandled Access Violation Reading 0x0000 Exception at e4f165d9h’ (where the last sequence randomly changes every time). It tends to crash in cases where other geometry is involved in the sectioning too.

Can you replicate the same behavior?

We might be able to if we had access to your drawing. Want to post it?

What graphics card? What are your computer specs?

Here's one file it happened with. The object on the left hand side causes the problem, the one on the right-hand side I re-built using solids to avoid the problem.

I can reproduce it with other files too; sometimes they will save (without the lofted surface in it), other times they will crash.

Thanks for your effort!

chimenea.dwg

PS: 2D sections are saving fine, only 3D sections cause issues.

I downloaded your drawing and used the SectionPlane command on it. Had no problems. Maybe you can elaborate a bit more on what you are doing step-by-step.

I am using the section plane command, then section plane to block, then usually one of the orthographic options, then export to a file leaving the other options in the section settings unchanged. While exporting it usually crashes.