ADCS error

Hi, I am trying to install the ADCS, but keep getting the error message in the eventlog saying: The description for Event ID ( 105 ) in Source ( Navision Communication System Service ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. The following information is part of the event: . The similar message for the VT100 service. Any help would be appreciated!