[boost] possible bgl problem?

I am trying to read a seemingly simple dot file (produced by pygraphlib) with read_graphviz and I am getting 'syntax error' exception. The file looks like this (copy attached). digraph G { "there" []; "here" []; "here" -> "there" []; } boost_1_32_0, OS X Panther Thread model: posix gcc version 3.3 20030304 (Apple Computer, Inc. build 1495) thanks, max.