A new boost version has been released, 1.46. The boost/filesystem lib has had a major revision, for that small changes need to be made to PluginLoader.cpp Furthermore, I get errors because 'assertion' is ambiguous in the Parsers. I suppose it has to do with changes to boost/assertion. I added namespace specifiers in front of assertion, not sure though if this is what you think is appropriate. It made the compilation succeed.