Qtractor crash with EQ plugin

 gdb qtractor
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from qtractor...(no debugging symbols found)...done.
(gdb) thread apply all bt
(gdb) run
Starting program: /usr/bin/qtractor
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19-gdb.py", line 63, in <module>
    from libstdcxx.v6.printers import register_libstdcxx_printers
ImportError: No module named 'libstdcxx'
[New Thread 0x7fffe176e700 (LWP 19480)]
[New Thread 0x7fffe16ed700 (LWP 19481)]
[New Thread 0x7fffe0f11700 (LWP 19482)]
[New Thread 0x7fffe166c700 (LWP 19483)]
[New Thread 0x7fffd4edf700 (LWP 19484)]
[New Thread 0x7fffcffff700 (LWP 19485)]
[New Thread 0x7fffcf7fe700 (LWP 19486)]
[New Thread 0x7fffcd866700 (LWP 19491)]
[New Thread 0x7fffccc5c700 (LWP 19496)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffe166c700 (LWP 19483)]
0x00007fffcc255ef0 in ?? ()
(gdb) bt
#0  0x00007fffcc255ef0 in ?? ()
#1  0x0000000003cce4a8 in ?? ()
#2  0x0000000000000002 in ?? ()
#3  0x0000000000000002 in ?? ()
#4  0x00007fffb9e1e6be in ?? () from /usr/lib/lv2/helm.lv2/helm.so
#5  0x00000000004a0a57 in ?? ()
#6  0x000000000051f2ab in ?? ()
#7  0x00000000004ae78f in ?? ()
#8  0x0000000000448b02 in ?? ()
#9  0x00007ffff7b9f2cd in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#10 0x00007ffff7b9e9c8 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#11 0x00007ffff7bbac40 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#12 0x00007ffff4e12182 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#13 0x00007ffff431f47d in clone () from /lib/x86_64-linux-gnu/libc.so.6
(gdb)