If you have been clinging to a library of VBA macros written for AutoCAD 2010 or 2012, upgrading to AutoCAD 2013 likely gave you a headache. When Autodesk made the jump to a true 64-bit application architecture with AutoCAD 2013, many users discovered that their VBA routines simply stopped working.
Historically, VBA (Visual Basic for Applications) was bundled directly with AutoCAD. However, with the release of AutoCAD 2013, Autodesk shifted to a 64-bit only model. Because VBA (originally a 32-bit component) required a massive re-architecture to run in-process with a 64-bit host, Autodesk removed it from the default installation. autocad 2013 vba module 64-bit
Bridging the Gap: Running the AutoCAD 2013 VBA Module on 64-bit Systems If you have been clinging to a library
The good news? It wasn't the end of VBA. Autodesk simply decoupled it. Here is everything you need to know about getting the working on 64-bit Windows. However, with the release of AutoCAD 2013, Autodesk
To support legacy automation, Autodesk released the as a free, standalone download. This module allows 64-bit AutoCAD to load and execute VBA projects ( .dvb files).