Remember: acngen.exe is the engine of your AutoCAD experience. When it runs smoothly, your drawing regenerations are fast, plots are reliable, and annotations scale perfectly. Do not let a debug error derail your project.
Check C:\Program Files (x86)\Common Files\Autodesk Shared\AdskLicensing\ or ...\Genuine Service\ for acngenexe.exe .
This forces AutoCAD to ignore the module causing the crash.