Product(s):	AECOsim Building Designer
	Version(s):	08.11.09.866
	Environment:	N\A
	Area:	Form Modeling
	Subarea:	3D Modeling

Problem

When clicking on Extrude Shape to Free Form tool and selecting a shape, it crashes AECOsim.

Solution

Delete atfprefs.rsc and tfprefs.rsc.  These are preference files that are used to store any settings in the architectural and triforma platform-related tool boxes and may have become corrupted. They can be deleted and will regenerate as soon as AECOsim is reopened.