To understand the necessity of the VBA module, we must look at the history of AutoCAD development. Prior to AutoCAD 2010, VBA was installed by default. It was a core part of the application. If you opened AutoCAD 2007 or 2008, the VBA environment (accessed via VBAIDE ) was ready and waiting.
Open Control Panel > Programs and Features. If you see any entry named "Microsoft Visual Basic for Applications" or "AutoCAD VBA Module" from a different year, uninstall it. autocad 2013 vba module 64-bit
You are trying to call a 32-bit DLL from 64-bit AutoCAD. You need a 64-bit version of that custom DLL. Solution: Recompile any custom DLLs as 64-bit. If you do not have the source code, consider interop workarounds or third-party bridging tools. To understand the necessity of the VBA module,
Launch AutoCAD 2013. Type VBAMAN (VBA Manager) at the command line. If you opened AutoCAD 2007 or 2008, the
File path permissions or a damaged VBA project file. Solution: Use VBALOAD to manually load your .dvbx file. If loading fails, create a new VBA project and copy your modules one by one.
Finding the correct installer can sometimes be difficult, as Autodesk moves files around their knowledge base and community forums. When searching for the module, precision is key.
Declare PtrSafe Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As LongPtr