Psi crashes upon account creation

[yokto]

Basic info

Linux petroc 4.4.4 #1-NixOS SMP Thu Mar 3 23:10:04 UTC 2016 x86_64 GNU/Linux
NixOS: 16.09pre78286.0bf8a1a

Describe your issue here

Psi crashes as soon as you click the save button during account creation. Might be related to #8764.

strace attached.
psi-strace.txt

backtrace:
#0 0x00007ffff4755cda in __strcmp_sse2_unaligned () from /nix/store/pv9sza1cf2kpawck7wbwdnhlip5h57lg-glibc-2.23/lib/libc.so.6
#1 0x00007ffff3758ce9 in g_str_equal () from /nix/store/h4pnadn5a1fzb5zdcpr6jxkrd7y91nmx-glib-2.46.2/lib/libglib-2.0.so.0
#2 0x00007ffff375822c in g_hash_table_lookup () from /nix/store/h4pnadn5a1fzb5zdcpr6jxkrd7y91nmx-glib-2.46.2/lib/libglib-2.0.so.0
#3 0x00007ffff377811b in g_intern_static_string () from /nix/store/h4pnadn5a1fzb5zdcpr6jxkrd7y91nmx-glib-2.46.2/lib/libglib-2.0.so.0
#4 0x00007fffd52b69d5 in gst_rtp_bin_get_type () from /nix/store/8p4jfxb84ygp5j9hlyspmd1zfg87gngb-psimedia-1.0.3/share/psi/plugins/libgstprovider.so
#5 0x00007fffd52adf99 in plugin_init () from /nix/store/8p4jfxb84ygp5j9hlyspmd1zfg87gngb-psimedia-1.0.3/share/psi/plugins/libgstprovider.so
#6 0x00007fffd5d0ef86 in gst_plugin_register_func () from /nix/store/1pq397slbrx8nx0h04xyhxbx4wswsvy3-gstreamer-0.10.36/lib/libgstreamer-0.10.so.0
#7 0x00007fffd5d0ff03 in gst_plugin_register_static () from /nix/store/1pq397slbrx8nx0h04xyhxbx4wswsvy3-gstreamer-0.10.36/lib/libgstreamer-0.10.so.0
#8 0x00007fffd52ae095 in gstelements_rtpmanager_register () from /nix/store/8p4jfxb84ygp5j9hlyspmd1zfg87gngb-psimedia-1.0.3/share/psi/plugins/libgstprovider.so
#9 0x00007fffd52adf6b in gstelements_register () from /nix/store/8p4jfxb84ygp5j9hlyspmd1zfg87gngb-psimedia-1.0.3/share/psi/plugins/libgstprovider.so
#10 0x00007fffd52a0fcf in PsiMedia::GstSession::GstSession(QString const&) () from /nix/store/8p4jfxb84ygp5j9hlyspmd1zfg87gngb-psimedia-1.0.3/share/psi/plugins/libgstprovider.so
#11 0x00007fffd52a0807 in PsiMedia::GstThread::run() () from /nix/store/8p4jfxb84ygp5j9hlyspmd1zfg87gngb-psimedia-1.0.3/share/psi/plugins/libgstprovider.so
#12 0x00007ffff5a8222f in ?? () from /nix/store/visy89xzashqblv2h6piz9shzwd2c7cn-qt-4.8.7/lib/libQtCore.so.4
#13 0x00007ffff57e1714 in start_thread () from /nix/store/pv9sza1cf2kpawck7wbwdnhlip5h57lg-glibc-2.23/lib/libpthread.so.0
#14 0x00007ffff47adc5d in clone () from /nix/store/pv9sza1cf2kpawck7wbwdnhlip5h57lg-glibc-2.23/lib/libc.so.6