I have the following: import toolset : using ; using python : 2.4 : c:/python24 ; using msvc : 7.1 ; in my user-config.jam file. This worked on the 20th/21st Feb, but now, if I do: c:/python24/python ./regression.py setup --v2 --pjl-toolset=msvc-7.1 I get the following warning: warning: toolset python initialization: can't find tool python2.4 warning: initialized from Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (and if you don't know what ICU is then you probably don't need it). and this error: error: Unable to find file or target named error: 'test_exec_fail4.cpp' error: referred from project at error: '../libs/test/test' NOTE: This is using today's 8:05 Metacomm CVS tarball. - Reece