I wonder how USPS could have broken that. I tried adding an escape '\' character before the @ but it copies the whole thing, including the '\'. But sure enough that seems to be the culprit for me. Tried a few times. Also tried re-arranging the inputs as I sent them, but it all goes back to that @ symbol.

Something so small and stupid causing such a big impact. Well I better add some notes to the download.

But I just want to be sure everyone else's problems are fixed by this.