Thank you! I have not had a chance to test the module yet, but I was able to get it installed and everything looks right so far.
Just one note for anyone else who might need this solution: the backward_compatability folder is not included in the initial download. It must be downloaded as a separate zip file, unzipped and then the contents should be placed in the backwards_compatibility folder inside of the uspscarrier folder before rezipping and uploading to Prestashop.
Also, I'm glad you have contacted Prestashop, as I would guess we are not the only people who have been effected by this issue.
Thank you again for your assistance, much appreciated!