This article provides information for resolving the error, There was an error starting the GFI FaxMaker Fax Server Service. after upgrade.
This error is seen after the upgrade or installation at the end of the Faxmaker Configuration Wizard when the Configuration Wizard is starting the FaxMaker Fax Server Service and The Message Transfer Agent Service.
Usually when this happens a reinstallation of the software resolves this issue. Please follow the steps in the reinstalling FaxMaker article to resolve this issue.
Once the software has been reinstalled per the above mentioned article, the FaxMaker Configuration Wizard will complete and start the services.