The system abort may be related to the following: 

CR# JAGaf63845
problem
VTSERVER has determined it has received an unexpected message type
while starting up, and in logging the problem, it dereferences a
pointer variable which contains invalid data, as it has not been
initialized.  Since VTSERVER is a system process, the result is a
SA1457.



Cause Text

cause
VTSERVER message raise some problem when transferring the data from the
source buffer to VTSERVER's internal structure.



Fix Text

fix
Folowing patch id has the fix for this CR


6.5 b0406= nsshdf1
7.0 b0509= nsshdf2
7.5 b0601= nsshd12

 To find out the version on your system you will need to do the following;

logon to manager.sys
:nmmaint,6
  this will provide you with the network services overall version.

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