I was able to install the agent finally. The Common Framework files must have had the READ-ONLY attribute set. Once I reset that attribute, deleted the files and then the install worked fine. Thanks for your time. However, now the issue seems that this client fails to update to the latest DAT.
Monday, May 04, 2009 8:39:54 AM Info Script Searching available updates for DATs.
Monday, May 04, 2009 8:39:54 AM Info Script Update failed to version 5604.0000.
The repo is found without problems but the DAT update fails. I need to ask the local site guy to reboot this computer and see if the problem continues.