Ok Jeff, I hope you can help with this one. Created a date object and did a call to cout with to_simple_string(0) and got linker errors. Program and error are below. I looked at the greg_month.hpp file and realised that the methods complained about are declared but not implemented. Could this be the source of the problem?
Looks like you haven't built and/or included libboost_date_time in your project settings. One problem with the 1.29 release is that the date_time build didn't get into the overall Jamfile so you need to go into the boost/libs/date_time/build library and run bjam to build the library if you haven't already. Once you have the library you will need to also include this in your project settings. And, BTW, the methods are defined in boost/libs/date_time/src/gregorian Jeff