Answer
The PrizmDoc MSO feature requires either Microsoft Office 2013 or 2016 to be installed in order to function properly. Based on the error, there is a Microsoft Office specific .dll file which is not registered properly.
The following process will re-register the .dll files and potentially resolve this issue (Note: for Step 2, this may vary depending on what directory you used to install Microsoft Office and the version of Office. You want to find the directory containing winword.exe):
Run Command Prompt as Admin.
Type cd C:\Program Files\Microsoft Office\Office15 or cd C:\Program Files\Microsoft Office\root\Office16
Run winword.exe -regserver .
Reboot the server .
If you don’t have the Prizm service set up to run on boot then make sure that Office applications are started by PrizmDoc, or from the command line, before being opened manually.