If you are using Big Business Server for macOS with Windows Clients and have Updated from 10.3 or earlier to 10.13 or earlier, you may see this error:
Error when executing the method PrintOpt_DestSet... The plug-in method cannot be executed. External routine not found (TobitProXL).
This problem is fixed in Big Business 10.14 and does not occur if you are using Big Business Server for Windows or started with 10.4 or higher. (6656)
This problem is fixed by installing Big Business 10.14 Server for macOS.