I resumed my laptop from a night of well deserved sleep.

Program received signal SIGSEGV, Segmentation fault.
icalcomponent_get_first_property (c=0x1, kind=ICAL_RECURRENCEID_PROPERTY) at icalcomponent.c:496
496        for( c->property_iterator = pvl_head(c->properties);
(gdb) bt

+ Trace 221609

365
366             for (iter = list; iter != NULL; iter = iter->next) {
367                     ECalendarViewEvent *event = iter->data;
368                     ECal *client;
369                     icalcomponent *icalcomp;
370                     gboolean read_only;
371
372                     if (event == NULL || event->comp_data == NULL)
373                             continue;
374
375                     client = event->comp_data->client;
376                     icalcomp = event->comp_data->icalcomp;
377
378                     e_cal_is_read_only (client, &read_only, NULL);
379                     sources_are_editable &= !read_only;
380
381                     recurring |=
382 ----- here ----             e_cal_util_component_is_instance (icalcomp) ||
383                             e_cal_util_component_has_recurrences (icalcomp);
384             }
(gdb) p *event
Cannot access memory at address 0x0
(gdb) p event->comp_data
Cannot access memory at address 0x4
(gdb) p event->comp_data->icalcomp
Cannot access memory at address 0x4
(gdb) p iter
$3 = 0xaaf19410 = {0xa7448b0}
(gdb) p list
$4 = 0xaaf19410 = {0xa7448b0}
(gdb) p iter->data
$5 = (gpointer) 0xa7448b0
(gdb) p iter->next
$6 = 0x0
(gdb) p list
$7 = 0xaaf19410 = {0xa7448b0}
(gdb) p iter
$8 = 0xaaf19410 = {0xa7448b0}
(gdb) p list->net
There is no member named net.
(gdb) p list->next
$9 = 0x0

(gdb) p *(ECalendarView *)selectable
$14 = {parent = {container = {widget = {object = {parent_instance = {g_type_instance = {g_class = 0x8d35e00}, ref_count = 9, qdata = 0x21a402d0}, flags = 
    2166752}, private_flags = 1536, state = 0 '\000', saved_state = 0 '\000', name = 0x0, style = 0xb337bc80 [ClearlooksStyle], requisition = {width = 85, 
          height = 145}, allocation = {x = 334, y = 100, width = 1003, height = 1008}, window = 0xa5d48950 [GdkWindow], parent = 0x9309450 [GtkNotebook]}, 
      focus_child = 0x0, border_width = 0, need_resize = 0, resize_mode = 0, reallocate_redraws = 0, has_focus_chain = 0}, children = 0x83156d0 = {
    0xabecf858, 0xabeeadc8, 0xabfc2fc0, 0xab8b8018, 0xa9aba078, 0xa5e83470, 0xabb0fd38}, rows = 0xa92d5be0, cols = 0xab085618, nrows = 3, ncols = 3, 
    column_spacing = 0, row_spacing = 0, homogeneous = 0}, in_focus = 1, priv = 0xa92d5ba8}

(gdb) p *((ECalendarView *)selectable)->priv
$15 = {calendar = 0xa763fb0 [GnomeCalendar], model = 0xaafa2758 [ECalModelCalendar], default_category = 0x0, copy_target_list = 0xa3b0e88, 
  paste_target_list = 0x9237b88}

(gdb) p e_calendar_view_get_selected_events (selectable)
[Thread 0x9eef6b70 (LWP 2023) exited]
$17 = 0x21bb54c0 = {0xa7448b0}
(gdb) p $17->data
$18 = (gpointer) 0xa7448b0
(gdb) p $17->next
$19 = 0x0
(gdb) p *(ECalendarViewEvent* )$18
$21 = {canvas_item = 0x11672af0, comp_data = 0xa9209180, start = 1272477600, end = 1272481200, start_minute = 1140, end_minute = 1200, different_timezone = 
    0, is_editable = 0, tooltip = 0x0, timeout = -1, color = 0x0, x = 810, y = 896}
(gdb) p *((ECalendarViewEvent* )$18)->comp_data
$22 = {object = {g_type_instance = {g_class = 0xaae95638}, ref_count = 47, qdata = 0xd}, client = 0x125f2a10, icalcomp = 0x1, instance_start = 1, 
  instance_end = 1, dtstart = 0x4000, dtend = 0xffffc800, due = 0x18000, completed = 0x3800, created = 0x0, lastmodified = 0xffffbc00, color = 
    0x1c000 <Address 0x1c000 out of bounds>, priv = 0x5400}
(gdb) p *((ECalendarViewEvent* )$18)->comp_data->priv
Cannot access memory at address 0x5400

Hmm [!] ...