Although, I had orignally thought the issue was on the "Webform CiviCRM Integration" module end, further testing shows it is likely an issue on the CiviCRM end since when I manually try to create the relationship I end up with a "spinning wheel" and a page refresh gives the following error:
"unknown relationship create error API (EntitySetting, get) does not exist (join the API team and implement it!)"
Any insight?