I've recently added a new product and have started receiving the above msg whenever this item is in checkout. I've looked at some of the other threads here. Here are the steps I've done so far.
Deleted and remade the item
Made all weights in oz
Deleted and recreated the shipping zone.
Even items in the same shipping zone with the same item settings work fine. I'm not sure why this isn't working.
Can anyone offer any suggestions? I'll try anything at this point.