OK, I’m narrowing in on the problem, but still no solution. It seems that this line (near line 442) in rss.php:
// returns cache HIT, MISS, or STALE
$cache_status = $cache->check_cache( $url );
always returns ‘STALE’ for any RSS feed url that it checks. As a result, it appears to be returning a cached feed, instead of a live/udpated feed. I have no idea a) where the cached version of the feed resides, or b) how to get it to return ‘HIT’, and the updated feed.
Still plugging away . . .