RSA Authentication Agent 6.4 keeps logging messages in the Event Viewer such as the following example:

"The description for Event ID (113) can not be found (in resource ACECLIENT).  Local computer may does not have necessary registration information or DLL file to display information on remote computer.   You may be able to use /AUXSOURCE= to do key word description, check help and support to understand detail information.  The following information is part of the event: Winlogon.exe, UISResCoreCHT.dll"

Apart from logging these messages in the Event Viewer, authentication via the RSA Authentication Agent is not affected.