Abort (core dump) when deleting dialog

Binary package hint: glade

Package version: glade 2.12.1-1ubuntu5 x86_64

I wanted to completely redesign the layout of a dialog so I created a new one with new layout containers. I copied some widgets from the old dialog into their new places then renamed them to their original names. Finally I deleted the original dialog, at which point glade aborted and lost my changes. Perhaps having widgets with the same names in both the new and old dialog upset it?

The error message was:

 ** ERROR **: file gailtreeview.c: line 3604 (garbage_collect_cell_data): assertion failed: (GAIL_IS_TREE_VIEW (data))
aborting...
Aborted (core dumped)

Backtrace:

#0 0x00002b341c96711d in raise () from /lib/libc.so.6
#1 0x00002b341c96884e in abort () from /lib/libc.so.6
#2 0x00002b341c5cb42f in IA__g_logv (log_domain=0x0,
    log_level=<value optimized out>,
    format=0x2b341c5f2c98 "file %s: line %d (%s): assertion failed: (%s)",
    args1=0x7fff90633f80) at gmessages.c:497
#3 0x00002b341c5cb4b3 in IA__g_log (
    log_domain=0xf03 <Address 0xf03 out of bounds>, log_level=3843,
    format=0x6 <Address 0x6 out of bounds>) at gmessages.c:517
#4 0x00002b341c5cb536 in IA__g_assert_warning (log_domain=0x0,
    file=0x2b341d33baaa "gailtreeview.c", line=3604,
    pretty_function=0x2b341d33bda0 "garbage_collect_cell_data",
    expression=0x2b341d33bb72 "GAIL_IS_TREE_VIEW (data)") at gmessages.c:552
#5 0x00002b341d32fbbb in gail_tree_view_new ()
   from /usr/lib/gtk-2.0/modules/libgail.so
#6 0x00002b341c5c2bfd in IA__g_main_context_dispatch (context=0x62aa40)
    at gmain.c:1916
#7 0x00002b341c5c5ec5 in g_main_context_iterate (context=0x62aa40, block=1,
    dispatch=1, self=<value optimized out>) at gmain.c:2547
#8 0x00002b341c5c618a in IA__g_main_loop_run (loop=0x90a640) at gmain.c:2751
#9 0x00002b341a8f4582 in IA__gtk_main () at gtkmain.c:1026
#10 0x0000000000440c7b in ?? ()
#11 0x00002b341c95449b in __libc_start_main () from /lib/libc.so.6
#12 0x00000000004168aa in ?? ()
#13 0x00007fff90634308 in ?? ()
#14 0x000000000000001c in ?? ()
#15 0x0000000000000002 in ?? ()
#16 0x00007fff9063591d in ?? ()
#17 0x00007fff90635925 in ?? ()
#18 0x0000000000000000 in ?? ()