flickr.rb won't accept tags with only one photo

I have been playing around with flickr.rb for the photos section of my
website, and it's been going well except for one hitch. Whenever I
try to grab the photos from my flickr acount by tag, and there is only
one photo associated with that tag, I get a "Can't convert String to
Int" exception.

The code is as follows:

@photo_test = @user.tag('tag_with_one_photo')

When I query with a tag for which there is only one photo, I get the
exception. Otherwise, it works just fine. The exceptions are
happening on line 103 of flickr.rb, so I think this may be a bug. If
anyone knows anything about this or can help me out I would greatly
appreciate it.