Hello, According to the maintenance plan of Boost.Test, the lib officially drops support for vc6.5/7.0 except that regressions showing up in the Boost libs regression tests page which are due to changes in Boost.Test will be taken care of. Well, the latter case has recently arisen, see for instance http://tinyurl.com/etpcg (there are a lot more, this is just an example.) These can be remedied (confirmed locally) by reverting to prior versions of the following files of Boost.Test which included explicit worakrounds for MSVC: class_properties.hpp --> v1.8 unit_test_suite.ipp --> v1.11 callback.hpp --> v1.5 Any chance of this being applied? I can do it myself if Gennadiy doesn't mind. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo