Wondering what the verdict on this was ...
Jason (webassist), this thread, and the outcome, relates to a current hurdle I have come upon. I also had the "S is not a valid unit of measure" error. I followed your instruction to edit the WeightUnits/WeightSuffix, which produced a "GS is not a valid unit of measurement for weight for this shipment" error, similar error to eric's "1S". Was the final remedy one that might resolve my issue, or were there other contributing factors in eric's code that needed sorting out? If the later, what would you need to see to assess my problem?
I know you guys are supppppeeeerrrrr busy ... thanks for always taking the time to help us all out!