https://bugzilla.redhat.com/show_bug.cgi?id=1293735
--- Comment #17 from Dmitry Mikhirev mikhirev@gmail.com --- I'm sorry, the rebuild backage contained a symlink in /usr/bin, and that is why it worked. The mistake is that the final slash in path is missing, so the program tries to open /usr/lib64/boomagaboomagamerger file and fails.
boomagamerger is an executable file and belongs not into /usr/lib64 but into /usr/bin
Not all executable goes to %{_bindir}. It is used for programs that user runs normally, but programs designed to be run by other programs goes to %{_libexecdir} or %{_libdir}/%{name}. See https://fedoraproject.org/wiki/Packaging:Guidelines#Libexecdir for more details.