Why am I getting a Runtime error 429 when attempting to run SLU.exe to license a toolkit?

When trying to add a license to Windows machine running SLU.exe, the following error message appears:

Run time error 429. ActiveX component can't create object.

Why this might be happening?

This error is typically encountered when the AccuLicClient.dll is not registered prior to running the SLU.exe application.

If you register it by running the following command...

C:\Windows\system32\regsvr32.exe .\AccuLicClient.dll (on 32-bit Windows systems)
or
C:\Windows\SysWOW64\regsvr32.exe .\AccuLicClient.dll (on 64-bit Windows systems)

...from an elevated command prompt/PowerShell in the same directory as the SLU.exe application, typically at...

"C:\Users\Public\Documents\Accusoft\Common\Licensing\Deployment" 

...and then attempt to run the SLU.exe again, the error should go away. Within that directory, there should also be a "readme.txt" file with more detailed instructions.