After a number of attempts to resolve the failure of a Clarion written program to launch from various workstations, we have found that the culprit was the installation of Symantec Endpoint Security AV Suite Clients. After complete removal of the AV software from one workstation in particular, the program has launched multiple times with no problems, error messages, inability to find the .exe file, or report the inability to find any of the 10 or so c6*.dll files. The Symantec AV Suite clearly does not like Clarion files. I will continue to remove all installed Symantec AV Clients and monitor the Clarion Program. The server is new with Windows 2008 R2 x64 running on VMWare.