Remote Agent not working

Hi,

I am running Symantec Backup Exec 2010 R2.

When installing the Remote Agent (either push install or manually on the server itself using setupaofox64.cmd) on a particular Windows Server 2008 x64 bit server the agent seems to install correctly but when I open the agent I get the following error: -   

"vxmon.exe - Entry Point Not Found

The procedure entry point ?DeleteFromRegistry@CSecurityConfigCollection@@QEAAXH@Z could not be located in the dynamic link library beclass.dll"

The agent installs no problem on other 2008 x64 servers.

Any help greatly appreciated.

Colin.