Zend_Search_Lucene Range Support

[atraver]

I'm having trouble getting range support working with Zend_Search_Lucene.
I've tried using ZF 1.5.1, 1.5.2 and also the snapshot from 2008-05-29 to no
avail. Here's the query in question:

+jake +feed_rating:[1 TO 5]

There are two documents in the index that should be returned from that query
(I opened the index using Luke and tested it), but I'm getting back zero
results. I've tried various forms of that query but they all come up with
zero results, too (even removing the "jake" term completely gives me zero
results):

+jake feed_rating:[1 TO 5]
+(jake) feed_rating:[1 TO 5]
+(jake) +(feed_rating:[1 TO 5]
feed_rating:[1 TO 5]

If you're interested, I've attached my index in case you'd like to do a bit
of digging around: http://www.nabble.com/file/p17697875/video-games.tar.gz
video-games.tar.gz

Any help?

Thanks!
Adam