Many of the initial errors are gone as a result of this patch: However, then in the code called from the files where the patch was applied, give class segment undefined errors: /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/bits/stl_algo.h:5683:2: required from 'void std::stable_sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<std::_Rb_tree_const_iterator<Rosegarden::Event*>*, std::vector<std::_Rb_tree_const_iterator<Rosegarden::Event*> > >; _Compare = Rosegarden::GenericChord<Rosegarden::Event, Rosegarden::Segment, true>::PitchGreater]' /build/src/rosegarden/src/base/Sets.h:386:9: required from 'Rosegarden::GenericChord<Element, Container, singleStaff>::GenericChord(Container&, Rosegarden::GenericChord<Element, Container, singleStaff>::Iterator, const Rosegarden::Quantizer*, Rosegarden::PropertyName) [with Element = Rosegarden::Event; Container = Rosegarden::Segment; bool singleStaff = true; Rosegarden::GenericChord<Element, Container, singleStaff>::Iterator = std::_Rb_tree_const_iterator<Rosegarden::Event*>]' /build/src/rosegarden/src/commands/notation/AddFingeringMarkCommand.cpp:76:69: required from here /build/src/rosegarden/src/base/Sets.h:680:70: error: 'class Rosegarden::GenericChord<Rosegarden::Event, Rosegarden::Segment, true>::PitchGreater' has no member named 'getAsEvent' /build/src/rosegarden/src/base/Sets.h:681:70: error: 'class Rosegarden::GenericChord<Rosegarden::Event, Rosegarden::Segment, true>::PitchGreater' has no member named 'getAsEvent' make[2]: *** [src/CMakeFiles/RosegardenCommands-static.dir/commands/notation/AddFingeringMarkCommand.cpp.o] Error 1 make[2]: *** Waiting for unfinished jobs.... make[2]: Leaving directory `/build/src/build' make[1]: *** [src/CMakeFiles/RosegardenCommands-static.dir/all] Error 2 make[1]: Leaving directory `/build/src/build' make: *** [all] Error 2 Not a simple one here. What to try next?? Patch attempted: -- David C. Rankin, J.D.,P.E.