I'm in the process of preparing a data file for the Broken Earth setting, as I've mentioned. In process I periodically test things out. I've hit an odd bug. For whatever reason, when I select the psionic arcane background edge, its let's me, but I get an error that says "Arcane Backgrounds are exclusive" error. Any idea what I could have done that would produce this result? Initially it was with the modified version I did, but it does it with the original version, too. I'm assuming something I've done on one of my modifications is causing this, but I don't even know where to start.