Orderby Query Not Working

I can’t seem to get my query posts orderby function to work. It has worked in the past on previous sites, but I think with either a plugin or theme update I’ve been having issues on all of my sites. The posts have been appearing, however they are out of order.

Here’s the code I’m using:

query_posts('category_name=gallery,museum,performing-arts,library,movie-theater&orderby=title&order=ASC&posts_per_page=-1')

I am creating a child theme for the TwentyEleven, so I don’t know if there’s something in there that’s messing with the code.

Thanks in advance for any help!