Ah that explains it. But from your comments you have previously played KB and AP so why buy the complete edition? What else was in it beside the games?

I had to buy the GOY edition because I only have KB: AP in Spanish by FX INTERACTIVE (imported from Spain to Australia) so I was afraid that if I bought just the vanilla KB Crossworlds it wouldn't work, but still the standalone Crossworlds game was $50 anyway so for an extra $10 I got also the original game KB: AP included.
p.s. I actually had both the FX Interactive version and the English version, but since I had two I got rid of the English version, this was way before Crossworlds came along and I knew having KB: AP was a requirement.

Gotta blame luck for that (seriously distribution sucks in some countries, in mine things are only available at my capital, and that shit is in the middle of the 3000 km long spaghetti that is my country)