Submission Control Threshold Failure - LiveUpdate

Hello:

We are receving errors from our 64bit Windows7 clients.  Clients are using 12.1.2015.2015. Please see the attached screenshot.  Our clients receive updates from our SEPMs. The SEPMs receive updates from our LiveUpdate Server. LiveUpdate Server fetches updates nightly. 

This is an entry from the a client's log file.

As shown in the pic, I can not locate file 1345848522jtun_scd2.sep.... on our LiveUpdate Server in the clu-prod folder.

This is the third day, I was hoping that the missing update would be pulled down, but it hasn't.

 
Thanks for your help.