2151975 - Diagnostic Agents on-the-fly do not start

1. The SMD agents on-the-fly do not start. In the work folder, the log file "INSTSTAT" will contain the following errors:
   
   SHUTDWN_BY NO_MORE_CHILD_PROCESSES
   SHUTDWN_AT <timestamp>
   EXIT_TIME  <timestamp>
   EXIT_WITH  3 No more child processes
   
   
2. In file sapstart.log you may find:
   
   Execute Post-Shutdown Commands
   ------------------------------
   (16387) Exiting with Return-Code 3. (No more child processes)
   
   
3.  You will also notice that file smdagentgroup.properties is corrupted, having 0KB.

1. SAP Solution Manager 7.1 & 7.2 
2. Diagnostics Agents on-the-fly.

KBA , SV-SMG-DIA-SRV-AGT , Agent Framework , Problem