RCS failed to load a valid 3rd party Certificate Authority mediation DLL file

I have installed SCS and RCS to manage vPro devices.
How ever when I start the RCS Server service the following entries are displayed in the RCSLog.log file :

2017-06-04 00:04:45: Thread:3244(INFO) : RCS Server , Category: CA Mediation Plugins Source: CaMediationCOMInterface.cpp : CAInterfaceNamespace::CAMediationComInterface::init Line: 173: RCS failed to load a valid 3rd party Certificate Authority mediation DLL file, so RCS disabled the option.   (0xc0003f5e).

2017-06-04 00:04:45: Thread:3244(DETAIL) : RCS Server , Category: CA Mediation Plugins Source: c:\workst\f5ded80e061e568\products\scs\modules\cainterface\CaMediationCOMInterface.h : CAInterfaceNamespace::ProcessManager::TerminateIfFilenameMatches Line: 69: Entering

2017-06-04 00:04:45: Thread:3244(DETAIL) : RCS Server , Category: CA Mediation Plugins Source: c:\workst\f5ded80e061e568\products\scs\modules\cainterface\CaMediationCOMInterface.h : CAInterfaceNamespace::ProcessManager::TerminateIfFilenameMatches Line: 75: Exiting

2017-06-04 00:04:45: Thread:3092(ERROR) : RCS Server , Category: Initial 3rd party CA Mediation DLL.  Source: Src\RCSServer.cpp : CServiceModule::Run Line: 1433: RCS failed to load a valid 3rd party Certificate Authority mediation DLL file, so RCS disabled the option.   (0xc0003f5e).

Can anybody tell me what causes the error message " RCS failed to load a valid 3rd party Certificate Authority mediation DLL file,"
I have checked the certificates and they are all correct.
Any suggestions are welcome