gnomecc segfaults after choosing Theme Selector applet

["BASS, Ned" <nbass shl com>]

System:
Linux 2.0.36
Slackware 3.6
glib 1.1.16
gtk+ 1.1.16
imlib 1.93
ORBit/gnome-libs/gnome-core/control-center CVS 990221

Steps to reproduce:
1. launch gnomecc
2. select the Theme Selector applet
3. segmentation fault

gdb session:
MARGARITA[/home/ned] % gdb /usr/local/bin/gnomecc
GNU gdb 4.17
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This GDB was configured as "i586-slackware-linux"...
(gdb) run
Starting program: /usr/local/bin/gnomecc 

GnomeUI-WARNING **: Could not open help topics file NULL
error -- unable to locate node 0

GnomeUI-WARNING **: Could not open help topics file NULL
woo hoo -- gotta match Default

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkList'

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtksignal.c: line 512 (gtk_signal_emit): assertion
`object != NULL' failed.

Gtk-WARNING **: gtk_widget_size_request() called on child widget with widget
equal
 to widget->requisition. gtk_widget_set_usize() may not work properly.

Gtk-WARNING **: gtk_widget_size_request() called on child widget with widget
equal
 to widget->requisition. gtk_widget_set_usize() may not work properly.

Gtk-WARNING **: gtk_widget_size_request() called on child widget with widget
equal
 to widget->requisition. gtk_widget_set_usize() may not work properly.

Gtk-WARNING **: gtk_widget_size_request() called on child widget with widget
equal
 to widget->requisition. gtk_widget_set_usize() may not work properly.

Gtk-WARNING **: gtk_widget_size_request() called on child widget with widget
equal
 to widget->requisition. gtk_widget_set_usize() may not work properly.

Gtk-WARNING **: gtk_widget_size_request() called on child widget with widget
equal
 to widget->requisition. gtk_widget_set_usize() may not work properly.

Program received signal SIGSEGV, Segmentation fault.
GNOME_capplet_cancel (_obj=0x0, id=0, ev=0x8052630) at
control-center-stubs.c:260
control-center-stubs.c:260: No such file or directory.
(gdb) 
Gtk-WARNING **: gtk_widget_size_request() called on child widget with widget
equal
 to widget->requisition. gtk_widget_set_usize() may not work properly.

Gtk-WARNING **: gtk_widget_size_request() called on child widget with widget
equal
 to widget->requisition. gtk_widget_set_usize() may not work properly.
stty: standard input: Not a typewriter

(gdb) bt
#0  GNOME_capplet_cancel (_obj=0x0, id=0, ev=0x8052630) at
control-center-stubs.c:260
#1  0x804e1b8 in cancel_button_callback (widget=0x80943b0, data=0x80a4520)
at capplet-manager.c:234
#2  0x402035fd in gtk_marshal_NONE__NONE (object=0x80943b0, func=0x804e188
<cancel_button_callback>, func_data=0x80a4520, 
    args=0xbfffee20) at gtkmarshal.c:363
#3  0x401c6bcc in gtk_handlers_run (handlers=0x805cd98, signal=0xbfffeddc,
object=0x80943b0, params=0xbfffee20, after=0)
    at gtksignal.c:1877
#4  0x401c611b in gtk_signal_real_emit (object=0x80943b0, signal_id=109,
params=0xbfffee20) at gtksignal.c:1445
#5  0x401c434d in gtk_signal_emit (object=0x80943b0, signal_id=109) at
gtksignal.c:528
#6  0x40134f2c in gtk_button_clicked (button=0x80943b0) at gtkbutton.c:330
#7  0x4013682c in gtk_real_button_released (button=0x80943b0) at
gtkbutton.c:844
#8  0x402035fd in gtk_marshal_NONE__NONE (object=0x80943b0, func=0x4013679c
<gtk_real_button_released>, func_data=0x0, 
    args=0xbffff160) at gtkmarshal.c:363
#9  0x401c5ff2 in gtk_signal_real_emit (object=0x80943b0, signal_id=108,
params=0xbffff160) at gtksignal.c:1408
#10 0x401c434d in gtk_signal_emit (object=0x80943b0, signal_id=108) at
gtksignal.c:528
#11 0x40134e80 in gtk_button_released (button=0x80943b0) at gtkbutton.c:321
#12 0x40136154 in gtk_button_button_release (widget=0x80943b0,
event=0x80a9cc8) at gtkbutton.c:704
#13 0x4020323d in gtk_marshal_BOOL__POINTER (object=0x80943b0,
func=0x4013608c <gtk_button_button_release>, func_data=0x0, 
    args=0xbffff4c4) at gtkmarshal.c:32
#14 0x401c6154 in gtk_signal_real_emit (object=0x80943b0, signal_id=27,
params=0xbffff4c4) at gtksignal.c:1460
#15 0x401c434d in gtk_signal_emit (object=0x80943b0, signal_id=27) at
gtksignal.c:528
#16 0x401fa914 in gtk_widget_event (widget=0x80943b0, event=0x80a9cc8) at
gtkwidget.c:2776
#17 0x40198236 in gtk_propagate_event (widget=0x80943b0, event=0x80a9cc8) at
gtkmain.c:1285
#18 0x40197506 in gtk_main_do_event (event=0x80a9cc8) at gtkmain.c:742
#19 0x4023f6df in gdk_event_dispatch (source_data=0x0,
current_time=0xbffff840, user_data=0x0) at gdkevents.c:2079
#20 0x4034d4c8 in g_main_dispatch (current_time=0xbffff840) at gmain.c:640
#21 0x4034da17 in g_main_iterate (block=1, dispatch=1) at gmain.c:847
#22 0x4034db99 in g_main_run (loop=0x8063d40) at gmain.c:905
#23 0x40196f37 in gtk_main () at gtkmain.c:465
#24 0x804d61d in control_center_corba_gtk_main (argc=0xbffff8b0,
argv=0xbffff8c8) at corba-glue.c:125
#25 0x804c9d1 in main (argc=1, argv=0xbffff8c8) at main.c:196
#26 0x804c33e in ___crt_dummy__ ()
(gdb)