I'm trying to build the PDF docs for 1.48 but all attempts to build PDF's on both Trunk and release branches fails with errors such as: bjam pdf M:/data/boost/trunk/tools/build/v2/tools\boostbook.jam:649: in object(boostbook-generator)@49.run from module object(boostbook-generator)@49 error: Cannot build documentation type 'pdf' M:/data/boost/trunk/tools/build/v2/build\generators.jam:1004: in try-one-generator-really from module generators M:/data/boost/trunk/tools/build/v2/build\generators.jam:1066: in try-one-generator from module generators M:/data/boost/trunk/tools/build/v2/build\generators.jam:1282: in construct-really from module generators M:/data/boost/trunk/tools/build/v2/build\generators.jam:1366: in generators.construct from module generators M:/data/boost/trunk/tools/build/v2/build\targets.jam:1495: in construct from module object(typed-target)@776 M:/data/boost/trunk/tools/build/v2/build\targets.jam:1297: in object(typed-target)@776.generate from module object(typed-target)@776 M:/data/boost/trunk/tools/build/v2/build\targets.jam:732: in generate-really from module object(main-target)@782 M:/data/boost/trunk/tools/build/v2/build\targets.jam:704: in object(main-target)@782.generate from module object(main-target)@782 M:/data/boost/trunk/tools/build/v2/build\targets.jam:258: in object(project-target)@772.generate from module object(project-target)@772 M:/data/boost/trunk/tools/build/v2\build-system.jam:736: in load from module build-system M:\data\boost\trunk\tools\build\v2/kernel\modules.jam:283: in import from module modules M:\data\boost\trunk\tools\build\v2\kernel\bootstrap.jam:142: in boost-build from module M:\data\boost\trunk\boost-build.jam:17: in module scope from module Nothing has changed in my user-config.jam, and I've updated to the latest bjam executable. Any ideas on what broke? Thanks, John.