VERIFIED SOLUTION i

MailStream Plus 8.3.1 error "ksh: Acushare not running. Starting Acushare in background: not found"

Operating System: UNIX/Linux (maybe Windows could have similar issue)
 

Issue

After installing MSP 8.3.1 on UNIX AIX, while trying to install the PRFs received the error- 
"ksh: Acushare not running. Starting Acushare in background: not found"  

Cause

User installed MSP 8.31 into an existing installation location.
For that reason, as always when installing a newer version, the 8.3.1 install did not make any changes to the existing setup script.  It only makes changes to the setup.new script. So PBMSPRTS had not been set to the location of the 8.3.1 run time system.

When the setup script is sourced, it tries to run acushare but when it can’t find it, the setup script shuts down.  The acushare.log will have an error message that acushare was not found and also specify the path in which acushare is expected.

Resolution

UPDATED: May 16, 2019
Add PBMSPRTS to the setup script (and also set the UNIX type to "AIX"), source the setup, install the PRFs and the IVP. After this the job will run correctly.