Ah...I see....this estimator was from a contribution, but it's when you click on the estimator it brings up those errors. Not sure why. Very strange. Thank you for this insight. Do you think it possible to replace that contribution with the shipping estimator module, or is the update to 3.7 required to make that adjustment? Thank you for your help.

Quote Originally Posted by paulm View Post
I think you have been looking in the wrong direction, and that "MZMT" points to a contribution you installen, not to the Zen Cart "Shipping Estimator".

(sorry, but I can't help you with the actual contribution)