Abaqus Explicit verification checks, system error code

Hi. The Explicit verification checks fail to run on Abaqus 6.14-3 and Abaqus 2016 (successful for Abaqus 6.13-1 however). The system error in the log file is

'Abaqus Error: The executable package.exe aborted with system error code 1073741512'

The Standard and CAE verification checks run ok. I originally tried on Win10 Pro (64) system, however I installed on a Win7 Pro (64) older system and have the same error. I am at a loss to figure this out and would appreciate any help.

Regards, B