AutoCAD, a popular computer-aided design (CAD) software, is widely used by architects, engineers, and designers to create detailed drawings and models. However, like any complex software, it's not immune to errors and bugs. One such error that users may encounter is the "AcNgEn.exe" debug error. In this article, we'll explore what causes this error, its symptoms, and most importantly, how to troubleshoot and fix it.