The PFS game mode is broken. There are multiple issues that are related.
1. Pathfinder Guide to Organized Play source should not be loading regular sources. It should be loading only the pfs/.pcc files that contain the PFS specific rules modifications. Each of these _.pcc files use PRECAMPAIGN to prevent the rules modification from loading is the main source is not loaded.
2. Pathfinder Society Core Assumption should not be loading all regular sources (which is does because it is loading a bad version of guide to organized play. It should not be loading any of the _pfs_.pcc files since they should be loading in the pfsgtop.
3. Pathfinder Society Complete Rules should be loading the regular sources that have a converted to PFS and pfs/.pcc file. But it should not load the pfs/.pcc file directly.
I'm currently testing a fix for this and should have it ready in a few hours.