Hi, I am having problems building the serialization library with svn HEAD. I checked out the boost trunk into C:/JOHN/hvm/src/boost, and recently I began seeing this when I build boost with vc8.0: C:\JOHN\hvm\src\boost>..\..\bin\bjam --build-type=complete --stagedir=..\..\ threading=multi link=static --toolset=msvc --with-serialization stage libs\config\test\Jamfile.v2:41: in modules.load rule compile-fail unknown in module Jamfile. C:/JOHN/hvm/src/boost/tools/build/v2/build\project.jam:307: in load-jamfile C:/JOHN/hvm/src/boost/tools/build/v2/build\project.jam:63: in load C:/JOHN/hvm/src/boost/tools/build/v2/build\project.jam:116: in load-parent C:/JOHN/hvm/src/boost/tools/build/v2/build\project.jam:443: in initialize C:/JOHN/hvm/src/boost/tools/build/v2/build\project.jam:297: in load-jamfile C:/JOHN/hvm/src/boost/tools/build/v2/build\project.jam:63: in load C:/JOHN/hvm/src/boost/tools/build/v2/build\project.jam:167: in project.find C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:354: in find-really C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:408: in object(project-target)@79.find C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:827: in resolve-reference C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:843: in targets.generate-from-reference C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:1129: in generate-dependencies C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:1176: in object(typed-target)@84.generate C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:742: in generate-really C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:715: in object(main-target)@150.generate C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:254: in object(project-target)@79.generate C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:858: in targets.generate-from-reference C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:1129: in generate-dependencies C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:1179: in object(install-target-class)@70.generate C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:742: in generate-really C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:715: in object(main-target)@129.generate C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:858: in targets.generate-from-reference C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:1129: in generate-dependencies C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:1179: in object(alias-target-class)@76.generate C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:742: in generate-really C:/JOHN/hvm/src/boost/tools/build/v2/build\targets.jam:715: in object(main-target)@133.generate C:/JOHN/hvm/src/boost/tools/build/v2\build-system.jam:663: in load C:\JOHN\hvm\src\boost\tools\build\v2/kernel\modules.jam:267: in import C:\JOHN\hvm\src\boost\tools\build\v2/kernel/bootstrap.jam:134: in boost-build C:\JOHN\hvm\src\boost\boost-build.jam:11: in module scope It looks like an issue crept into the jam file recently because it _used_ to work. Any help here would be great! Thanks, John