I've seen this multiple times recently using the AARCH2 arrival, VHP transition for KSTL. Only tried runways 11 and 12L for landing. I have the latest AIRAC cycle.
I wonder if there's something up with when a STAR splits for different runways, as it loads fine until after PETTI. Once I pass PETTI it tries to go back to AARCH then onward to PETTI, KRIYA, etc., so I have to delete the first AARCH and PETTI waypoints.