I had this problem a couple weeks ago. After deleting the build subdirectory and rebuilding it went away until today
when it came back. I deleted the build directory and re-cmake/make/install/ldconfig, but the problem will not clear.
gnuradio-companion
linux; GNU C++ version 4.8.1; Boost_105300; UHD_003.007.001-84-gd99ce4ef
terminate called after throwing an instance of 'std::runtime_error'
what(): rpcmanager: Aggregator not in use, and a rpc booter is already registered
Aborted (core dumped)
Ubuntu 14.04
Gnuradio master 41d0844
-- Tom, N5EG