This should help...

[2013-07-18 23:40:10] ERROR[2545]: config_options.c:512 aco_process_config: 
Unable to load config file 'udptl.conf'
[2013-07-18 23:40:10] NOTICE[2545]: app_queue.c:7709 reload_queue_rules: No 
queuerules.conf file found, queues will not follow penalty rules
[2013-07-18 23:40:10] ERROR[2545]: cdr_custom.c:90 load_config: Unable to load 
cdr_custom.conf. Not logging custom CSV CDRs.
[2013-07-18 23:40:10] ERROR[2545]: cel_custom.c:89 load_config: Unable to load 
cel_custom.conf. Not logging CEL to custom CSVs.
[2013-07-18 23:40:10] NOTICE[2545]: res_odbc.c:1527 odbc_obj_connect: 
Connecting asteriskcdrdb
[2013-07-18 23:40:10] NOTICE[2545]: iax2-provision.c:558 iax_provision_reload: 
No IAX provisioning configuration found, IAX provisioning disabled.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb46d2b40 (LWP 2545)]
0xb733f6d8 in iks_stack_delete (s=0x8b0e9e8) at ikstack.c:189
189             c = s->meta->next;
(gdb) 

[deleted comment]

I ran into this problem too, for me if my username / password combo was bad I 
experience this segfault. 

The following patch fixes the failed login from causing asterisk to crash.

+++ src/filter.c        2013-12-06 13:15:48.000000000 -0800
@@ -45,7 +45,7 @@
        iksrule *rule;
        va_list ap;
        int type;
+       if (!f) return NULL;
-
        s = iks_stack_new (sizeof (iksrule), DEFAULT_RULE_CHUNK_SIZE);
        if (!s) return NULL;
        rule = iks_stack_alloc (s, sizeof (iksrule));