: The 64-bit module ensures that your macros can access the full memory address space of modern Windows environments. Installation Steps for AutoCAD 2015 (64-bit)

: Many firms rely on .dvb project files created over years of development.

Standard AutoCAD 2015 installations do not include the Visual Basic for Applications (VBA) engine by default. Without this module, attempting to run commands like VBALOAD , VBAMAN , or VBAIDE will trigger an error message stating that VBA is no longer installed.

To enable VBA functionality, you must download and install the specific "VBA Enabler" for your version of AutoCAD. Solved: vba 2015 - AutoCAD Forums