post was too long to have both logs in the same post.
valgrind output:
==14110== Memcheck, a memory error detector
==14110== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==14110== Using Valgrup, boost::optional >, boost::signals2::slot1 >, boost::signals2::mutex> > > (result_type_wrapper.hpp:53)
==14111== by 0x335180: operator() (signal_template.hpp:246)
==14111== by 0x335180: operator() (signal_template.hpp:718)
==14111== by 0x335180: ThreadMessageHandler() (net.cpp:1790)
Unfortunately valgrind has to be run on the actual source file (./biblepay-qt) with the cpp files present on the drive in order for us to see the line # in the report. The log above (debug.log) didnt have the very last shutdown section in it. But please try 1.1.4.7 and see if it solves the problem. We removed the condition that happened this morning for two users.