There seems to be a bug in the maps generated by the GenericPolyChecker script, possibly due to the system upgrades.
On the map, clicking on an area gives a popup with the name of the area and a count of caches found. This popup is a link, which should be to a map with restricted view of that area, but is now just a link to the landing page of PGC.
This bug was raised by yxza in the Checker requests forum. I'm just transferring it to bug reports with a more detailed description.