Requirement
ObjectARX and ObjectDBX modules (but not host applications)
Do not add files or directories to the AutoCAD directory. Files to be used directly by AutoCAD (aside from registry-based settings) should be added to the AutoCAD search path. The AutoCAD search paths are defined as this location in the AutoCAD installation registry (the example shows English):
HKEY_CURRENT_USER Software Autodesk AutoCAD R24.0 ACAD-4101:409 Profiles <<Unnamed Profile>> General ACAD