I also facing same error .
Below is the job's log. Job is not submitted and no sysout is created .
06/01/11 20:00:08 TR5080 FAILED TO SUBMIT JOB LHSKPMPS04. Message from Agent follows
06/01/11 20:00:08 TR5167 Failed to Load Back End Name 'OS'
06/01/11 20:00:08 TR5134 ENDED NOTOK
06/01/11 20:00:08 TR5120 JOB STATE CHANGED TO Analyzed
06/01/11 20:00:08 SL5120 JOB STATE CHANGED TO Post processed
Anybody has any solution or reason , Please let me know .
Check your Control-M Agent installation. I had the exact same error a few days ago, because all the Control-M Agent files were compressed.