Thank you for all the feedback.
Rafeeq: Successfully restarted the manager. The file remains in the 'incoming' dir. The Machines showed offline and are slowing returning. About 55% of the machines show "Up-to-date" however their Antivirust Content is listed as "04/27/2015 r39".
I cannot post the sesmu log. Is there something in particular that I should look for and report?
greg12: The "jdb executible" I'm using is the "CM-197415-savupjdb.exe" -- the 4 May Symantec Endpoint Protection signature. This looks like an exetuable although I agree it is a compressed file. My understanding is that this needs to be unwrapped and the output, a .jdb file is dragged and dropped into the incoming folder. I have used the SEPM.exe (CM-197415-20150504-003-v5i64) to update client standalone machines. The .jdb should be installed on our Symantec Manager (central server) which then feeds out the signature to enterprise clients.
Please let me know if I'm mistaken. I'm going to take the unwrapped 'jdb/exe' and install in the incoming folder.