Hi,
Go to C:\Program Files\Symantec\Symantec Endpoint Protection Manager\Inetpub\ClientPackages\
You will find alphanumberical folders (1b42208a6dc8ff67b9a65370351a0457) click on each folder,then go to folder by name "Full", then go to SetAid.notepad.
Open SetAid file, check for line ClientVersion
Please let me know which client versions are present there.