Note: If you're unsuccessful there's not much more we can suggest (other that use DXF instead) because the DWG conversion tool is an Active-X component created by a 3rd party. Here's their direct link if you're interested in more information about the active X component, https://www.autodwg.com/dwg_dxf_converter_activex/
Simon Garrison
Please try either suggestion below:
or
Ex. regsvr32 C:\Numerical Innovations\Fab3000V8_64\binActiveConverter64.dll
Note: Assuming you have installed FAB3k into the folder C:\Numerical Innovations\Fab3000V8_64, if not change the path to whatever folder you have installed FAB3k. You can try the following link for more information, https://support.numericalinnovations.com/support/discussions/topics/14000018352
Note: If you're unsuccessful there's not much more we can suggest (other that use DXF instead) because the DWG conversion tool is an Active-X component created by a 3rd party. Here's their direct link if you're interested in more information about the active X component, https://www.autodwg.com/dwg_dxf_converter_activex/
Related Support Links: https://support.numericalinnovations.com/support/discussions/topics/14000021038