Outlook/Office DLLs have become damaged.
This can happen during an Outlook/Office Update or if you upgrade to a new version of outlook outright
You will find a similar error in the Window Event Viewer:
Windows Registry DisclaimerSupport does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to Microsoft Article ID 256986 “Description of the Microsoft Windows registry” at Microsoft Support.
To resolve this issue try the following steps.
1. Uninstall Outlook/Office
2. Remove any remaining registry keys for Outlook/Office
3. Reboot the server
4. Reinstall Outlook/Office
Once the server comes back up the postprocessing service should stay running and processing documents.
If the issue persists please contact support for assistance.