Fighter doesn't qualify for Knight of Ozem

[Unseelie]

I'm trying to build a Knight of Ozem... 5th level Fighter (Dragoon). I've made sure to put 5 points in Know:Religion but it's still greyed out, showing 'Longsword Proficiency required.'

Umm, I'm a fighter. I have longsword as part of Martial Weapon. I'll log this as a bug as well, but when I look at the Knight of Ozem prestige class in the editor, there doesn't actually seem to be a requirement there. Where would I find this in the record?

Edit: I added an explicit Weapon Prof: Longsword as a permanent adjustment and that actually works. There appears to be a problem with the pre-reqs. Bug is filed, but I'm still curious where I would look for this Longsword requirement.