I suspect this is related to a problem discussed in a related post a week or so ago by Ignacy. Specifically that several functions depend on versions of equal_range that don't quite match the signature of std::equal_range. You might provide a temporary fix by providing an overload that matches the expected signature.

In general, the problem is that vertex and edge sets for anything other than vertexS or listS isn't very well tested. If I have time towards the end of the summer, I'll probably spend some time addressing these issues.