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How do I resolve a "not a valid .net assembly" error when registering the sage 100 DLL?


When running the register_for_com.bat, you see the error message "Regsm :  Failed to Load 'C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\regasm.exe avalara.avatax.adapter.dll /tlb /codebase' because it is not a valid .NET assembly."


Sage 100


  • Edit register_for_com.BAT
  • Replace v2.0.50727 with the correct .NET framework your computer is using.
  • Re-run register_for_com.BAT
  • Look for "Type registered successfully"