crashes when saving with the stroke panel opened

If the dialog/panel of the strokes is opened and I hit ctrl-s (save as) it will always crash inkscape.
Operating system: Ubuntu 10.10 32bits Maverick Meerkat
Linux version 2.6.35-23-generic-pae (buildd@roseapple) (gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5) ) #41-Ubuntu SMP Wed Nov 24 10:35:46 UTC 2010

Version of inkscape:
Inkscape 0.48.0 r9654 (Feb 15 2011)

Backtrace captured with gdb:
#0 0xb7fe1424 in __kernel_vsyscall ()
#1 0xb6366941 in raise () from /lib/libc.so.6
#2 0xb6369e42 in abort () from /lib/libc.so.6
#3 0xb70ea4af in g_assertion_message () from /lib/libglib-2.0.so.0
#4 0xb70eaaed in g_assertion_message_expr () from /lib/libglib-2.0.so.0
#5 0x0808fb84 in ?? ()
#6 0x0808fed7 in ?? ()
#7 0x08614419 in ?? ()
#8 0x08614847 in ?? ()
#9 0xb7ace19b in Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) () from /usr/lib/libglibmm-2.4.so.1
#10 0xb7181f2c in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#11 0xb7172412 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#12 0xb7188f78 in ?? () from /usr/lib/libgobject-2.0.so.0
#13 0xb7189fac in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#14 0xb718a452 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#15 0xb7592fba in gtk_adjustment_value_changed ()
   from /usr/lib/libgtk-x11-2.0.so.0
#16 0xb76dd32f in gtk_spin_button_set_value ()
   from /usr/lib/libgtk-x11-2.0.so.0
#17 0xb76dd44a in gtk_spin_button_update () from /usr/lib/libgtk-x11-2.0.so.0
#18 0xb76dd608 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#19 0xb7edcea1 in Gtk::Widget_Class::focus_out_event_callback(_GtkWidget*, _GdkEventFocus*) () from /usr/lib/libgtkmm-2.4.so.1
#20 0xb7666284 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#21 0xb7170a87 in ?? () from /usr/lib/libgobject-2.0.so.0
#22 0xb7172412 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#23 0xb71887d6 in ?? () from /usr/lib/libgobject-2.0.so.0
#24 0xb7189e2b in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#25 0xb718a452 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#26 0xb7794b96 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#27 0xb7798c4a in gtk_widget_send_focus_change ()
   from /usr/lib/libgtk-x11-2.0.so.0
#28 0xb77a3688 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#29 0xb77ad361 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#30 0xb7ee5bfc in Gtk::Window_Class::set_focus_callback(_GtkWindow*, _GtkWidget*) () from /usr/lib/libgtkmm-2.4.so.1
#31 0xb7181438 in g_cclosure_marshal_VOID__OBJECT ()
   from /usr/lib/libgobject-2.0.so.0
#32 0xb7170a87 in ?? () from /usr/lib/libgobject-2.0.so.0
#33 0xb7172412 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#34 0xb71887d6 in ?? () from /usr/lib/libgobject-2.0.so.0
#35 0xb7189fac in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#36 0xb718a452 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#37 0xb77ab10b in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#38 0xb77a182e in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#39 0xb7181f2c in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#40 0xb7170a87 in ?? () from /usr/lib/libgobject-2.0.so.0
#41 0xb7172412 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#42 0xb71887d6 in ?? () from /usr/lib/libgobject-2.0.so.0
#43 0xb7189fac in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#44 0xb718a452 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#45 0xb7798236 in gtk_widget_grab_focus () from /usr/lib/libgtk-x11-2.0.so.0
#46 0x08343fb2 in ?? ()
#47 0x0861624d in ?? ()
#48 0x08616888 in ?? ()
#49 0x08376306 in ?? ()
#50 0x0837242d in ?? ()
#51 0x0810ce3e in ?? ()
#52 0x080966b0 in ?? ()
#53 0x082547dd in ?? ()
#54 0x080cc808 in ?? ()
#55 0xb7ed6662 in ?? () from /usr/lib/libgtkmm-2.4.so.1
#56 0xb7666284 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#57 0xb7172412 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#58 0xb7188f78 in ?? () from /usr/lib/libgobject-2.0.so.0
#59 0xb7189e2b in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#60 0xb718a452 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#61 0xb7794b96 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#62 0xb77a76df in gtk_window_propagate_key_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
#63 0xb77aa9fc in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#64 0xb7edd381 in Gtk::Widget_Class::key_press_event_callback(_GtkWidget*, _GdkEventKey*) () from /usr/lib/libgtkmm-2.4.so.1
#65 0xb7666284 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#66 0xb7170a87 in ?? () from /usr/lib/libgobject-2.0.so.0
#67 0xb7172412 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#68 0xb71887d6 in ?? () from /usr/lib/libgobject-2.0.so.0
#69 0xb7189e2b in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#70 0xb718a452 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#71 0xb7794b96 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#72 0xb765e933 in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
#73 0xb765fc17 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#74 0xb74ef36a in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#75 0xb70c2855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#76 0xb70c6668 in ?? () from /lib/libglib-2.0.so.0
#77 0xb70c6ba7 in g_main_loop_run () from /lib/libglib-2.0.so.0
#78 0xb76601d9 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#79 0xb7e4d3b7 in Gtk::Main::run_impl() () from /usr/lib/libgtkmm-2.4.so.1
#80 0xb7e4d1b2 in Gtk::Main::run() () from /usr/lib/libgtkmm-2.4.so.1
#81 0x080853eb in ?? ()
#82 0x0816cdfa in ?? ()
#83 0x0808481a in ?? ()
#84 0xb6352ce7 in __libc_start_main () from /lib/libc.so.6
#85 0x08083831 in ?? ()