*** Break *** segmentation violation



===========================================================
There was a crash.
This is the entire stack trace of all threads:
===========================================================
#0  0x00007ff410d1951b in __GI___waitpid (pid=24884, stat_loc=stat_loc
entry=0x7ffc9a635000, options=options
entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29
#1  0x00007ff410c92fbb in do_system (line=<optimized out>) at ../sysdeps/posix/system.c:148
#2  0x00007ff40f8e8084 in TUnixSystem::Exec (shellcmd=<optimized out>, this=0xcf5cc0) at /home/mcf/applications/bin/root_src/core/unix/src/TUnixSystem.cxx:2116
#3  TUnixSystem::StackTrace (this=0xcf5cc0) at /home/mcf/applications/bin/root_src/core/unix/src/TUnixSystem.cxx:2403
#4  0x00007ff40f8ea9dc in TUnixSystem::DispatchSignals (this=0xcf5cc0, sig=kSigSegmentationViolation) at /home/mcf/applications/bin/root_src/core/unix/src/TUnixSystem.cxx:3661
#5  <signal handler called>
#6  0x00007ff411012268 in main_arena () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007ff3f8e4a012 in TPad::Close (this=0x2f02850) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TPad.cxx:947
#8  0x00007ff3f8e668d6 in TPad::~TPad (this=0x2f02850, __in_chrg=<optimized out>) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TPad.cxx:329
#9  0x00007ff3f8e66a09 in TPad::~TPad (this=0x2f02850, __in_chrg=<optimized out>) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TPad.cxx:335
#10 0x00007ff3f8e425be in TRatioPlot::~TRatioPlot (this=0x2ec5cf0, __in_chrg=<optimized out>) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TRatioPlot.cxx:166
#11 0x00007ff3f8e427e9 in TRatioPlot::~TRatioPlot (this=0x2ec5cf0, __in_chrg=<optimized out>) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TRatioPlot.cxx:191
#12 0x00007ff40f8a5551 in TClass::Destructor (this=0x2e4cc20, obj=0x2ec5cf0, dtorOnly=<optimized out>) at /home/mcf/applications/bin/root_src/core/meta/src/TClass.cxx:5071
#13 0x00007ff41047d897 in PyROOT::op_dealloc_nofree (pyobj=pyobj
entry=0x7ff3f9cf9990) at /home/mcf/applications/bin/root_src/bindings/pyroot/src/ObjectProxy.cxx:59
#14 0x00007ff41047d909 in PyROOT::(anonymous namespace)::op_dealloc (pyobj=0x7ff3f9cf9990) at /home/mcf/applications/bin/root_src/bindings/pyroot/src/ObjectProxy.cxx:212
#15 0x00007ff411c1a169 in subtype_dealloc (self=0x7ff3f9cf9990) at Objects/typeobject.c:1208
#16 0x00007ff411bfc676 in insertdict (mp=0x7ff41219b2c8, key=0x7ff4120a7ea0, hash=-7502432446103648923, value=0x7ff411fc4470 <_Py_NoneStruct>) at Objects/dictobject.c:809
#17 0x00007ff411c08ecc in _PyModule_ClearDict (d=0x7ff41219b2c8) at Objects/moduleobject.c:593
#18 0x00007ff411ca7778 in PyImport_Cleanup () at Python/import.c:460
#19 0x00007ff411cb390e in Py_Finalize () at Python/pylifecycle.c:576
#20 0x00007ff411cd21b9 in Py_Main (argc=<optimized out>, argv=<optimized out>) at Modules/main.c:789
#21 0x0000000000400add in main (argc=2, argv=0x7ffc9a637eb8) at ./Programs/python.c:65
===========================================================


The lines below might hint at the cause of the crash.
You may get help by asking at the ROOT forum http://root.cern.ch/forum.
Only if you are really convinced it is a bug in ROOT then please submit a
report at http://root.cern.ch/bugs. Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#6  0x00007ff411012268 in main_arena () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007ff3f8e4a012 in TPad::Close (this=0x2f02850) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TPad.cxx:947
#8  0x00007ff3f8e668d6 in TPad::~TPad (this=0x2f02850, __in_chrg=<optimized out>) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TPad.cxx:329
#9  0x00007ff3f8e66a09 in TPad::~TPad (this=0x2f02850, __in_chrg=<optimized out>) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TPad.cxx:335
#10 0x00007ff3f8e425be in TRatioPlot::~TRatioPlot (this=0x2ec5cf0, __in_chrg=<optimized out>) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TRatioPlot.cxx:166
#11 0x00007ff3f8e427e9 in TRatioPlot::~TRatioPlot (this=0x2ec5cf0, __in_chrg=<optimized out>) at /home/mcf/applications/bin/root_src/graf2d/gpad/src/TRatioPlot.cxx:191
#12 0x00007ff40f8a5551 in TClass::Destructor (this=0x2e4cc20, obj=0x2ec5cf0, dtorOnly=<optimized out>) at /home/mcf/applications/bin/root_src/core/meta/src/TClass.cxx:5071
#13 0x00007ff41047d897 in PyROOT::op_dealloc_nofree (pyobj=pyobj
entry=0x7ff3f9cf9990) at /home/mcf/applications/bin/root_src/bindings/pyroot/src/ObjectProxy.cxx:59
#14 0x00007ff41047d909 in PyROOT::(anonymous namespace)::op_dealloc (pyobj=0x7ff3f9cf9990) at /home/mcf/applications/bin/root_src/bindings/pyroot/src/ObjectProxy.cxx:212
#15 0x00007ff411c1a169 in subtype_dealloc (self=0x7ff3f9cf9990) at Objects/typeobject.c:1208
#16 0x00007ff411bfc676 in insertdict (mp=0x7ff41219b2c8, key=0x7ff4120a7ea0, hash=-7502432446103648923, value=0x7ff411fc4470 <_Py_NoneStruct>) at Objects/dictobject.c:809
#17 0x00007ff411c08ecc in _PyModule_ClearDict (d=0x7ff41219b2c8) at Objects/moduleobject.c:593
#18 0x00007ff411ca7778 in PyImport_Cleanup () at Python/import.c:460
#19 0x00007ff411cb390e in Py_Finalize () at Python/pylifecycle.c:576
#20 0x00007ff411cd21b9 in Py_Main (argc=<optimized out>, argv=<optimized out>) at Modules/main.c:789
#21 0x0000000000400add in main (argc=2, argv=0x7ffc9a637eb8) at ./Programs/python.c:65
===========================================================