Unable to open the file

Trying to debug our Abaqus installation. As of August 25th it was working fine, then my HPC users started reporting their Abaqus jobs were no longer running. I performed some tests of my own and within the name.dat file I have this error:

***ERROR: Unable to open the file Test8.stt

The Test8.stt file does get created when my job execution starts so I'm not sure why it is having this error. Please advise.