Bookmark this page. When the error reappears (and it will, because Autodesk updates slowly), run through Fix #1 through #5 in order. You will be back to modeling in less than 10 minutes.
Open AutoCAD in safe recovery mode (hold Shift while double-clicking the DWG and choose "Recover").
Have a different fatal error? Check our guides on acge20dbx and heidi9.dll failures.
Published by: TechCAD Solutions Reading time: 8 minutes Difficulty: Intermediate Introduction: The Unexpected Crunch Few things are more frustrating for a drafter or engineer than hitting your stride in a complex 3D model, only to have AutoCAD screech to a halt with the dreaded gray box:
