Parallel processing script fails after first successful completion of parfor

I am using our cluster to submit an array job with multiple CPUS per task to execute MATLAB script. The function sets up variables, then pre-initiates the parpool and then runs a parallel processing function three times. After the first successful parallel processing function, the job dies without any errors or warning output. There are many files listed in the 'user/.matlab/local_cluster_jobs/R2018a' directory. The only way to successfully re-start this job is for me to delete all of those files. Does anyone have an idea what might be going on?