The Extra Arcana feat doesn't give an extra arcana choice to the hexcrafter's Hex Arcana pool.
Hmm. In PCGen 6.3.0 (May 20 build, I think), I'm not able to select the Extra Arcana feat at all. With any magus. Maybe the prereq wasn't fixed to the new standard, but the class was?
The Add Witch Hex choice was reddened out, also, for the hexcrafter. Should it be?
Attach pcg so I can test.
I figured it out. Try the autobuild later. Both the feat and the Gain Witchhex are now working correctly.
It works! Great! Now to get the Accursed Strike prereqs in order... (Hexcrafter ~ Magus Archetype needs to be Magus Archetype ~ Hexcrafter)