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USER FATAL MESSAGE 3060 License Question

I am batch running nastran and occasionally get a string of failed runs due to this:
 
*** USER FATAL MESSAGE 3060 (PREFACE)
   - AUTHORIZATION ERROR ***
   UNABLE TO OBTAIN LICENSES FOR Nastran Solver
   PLEASE REFER TO THE LOG FILE FOR ADDITIONAL DETAILS
1                    * * * END OF JOB * * *
 
I tried adding Authque=20 as a keyword but that didn't help (it was default 20 but worth a shot). The run fails immediately without waiting 20 minutes. In a batch of 20 runs I could get 1-4 of these in a row before an attempt finds a license.
 
Since it isn't waiting for a license my current theory is it can't find the license server. Is there any way to prove this is the problem? And if true is there something I can do to make nastran wait around and try pinging the server instead of going to the next run?