Hi John, I can take a look at this. Sorry for the late response, the mailing list was not working I guess. Thanks, -Kushal. --------------------------------------------------------------------------- Hello, I am trying to add vertex data and a vertex reducer (using IntType) to an otherwise working program. In tests my tokenizer and vertex reducer both seem to work properly, but when I try to run my PreProcessJob I get a ClassCastException when the vertex reducer is called which tells me I cannot cast from EmptyType to IntType. Does anyone know how to fix this problem? Thank you, John Tyler -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.01.org/pipermail/graphbuilder/attachments/20130712/aaca989f/...