Ops, my bad. Actually, I did get it to work now. I don't know what I did wrong before, but in version 3.0 you should make line 58 look like this:
$itemDateIndex = strftime('%Y%m%d%H%M',strtotime($item->pubDate)); while (isset($feedItemsArray[$itemDateIndex]) || array_key_exists($itemDateIndex, $feedItemsArray)) { $itemDateIndex = date('YmdHi', strtotime($itemDateIndex.' '.'+ 1 minutes'));
}