Well DANG! I so hate mistakes and here there are two right out of the box.
I swear we had about 6 pairs of eyeballs and the same number of brains, including my own, on both of these patterns and yet... here we are. Both patterns say that the yarn used is lightweight, when in fact, it is mediumweight.
I know... and I'm sorry.
The only thing I can think of is that we were so concerned with getting all the charts and colors straight that we didn't notice the glaringly obvious error on yarn weight.
Please except our apologies.