So what was the solution? :o

http://www.gog.com/forum/general/7h3_fr34ksh0w_r3turnz/post13

With the slight twist that a character was accidentally missed from the original Hex.
SO once this was corrected, it gave 16 presidents & therefore a 16 digit GOG code.

Sigh. Was the code just letters? I've never seen that happen before.

I had Arcanum anyway, but regardless, I feel like a complete idiot.

It was just letters.
I thought it odd, but I tried it & it worked!

Indeed, it was very odd that there were no numbers in the code. It worked well for me though.

The last time I did this, it turned out a list of 16 ISBN numbers, then you had to use some deductive reasoning to determine who the title of the book corresponded to the character in the gift code. :)

I decided there've been too many random chance giveaways recently, and wanted to make people think again ;)