We got our copy of the Island of Empty Eyes off Amazon, and it didn't come with the errata pack. I tried to get it through my local game store, but they didn't have any luck going through their distributor (probably since it's so long after release). Any chance there are still any packs sitting around somewhere? I'd really like to try the bonus scenario from it.
Contact customer service. If Paizo has any left, I'm sure they will get one to you.