== Spawn extension (7052232000_IVR, s, 2) exited non-zero on 'Zap/2-1'

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -308462672 (LWP 17369)]
pbx_builtin_getvar_helper (chan=0xed9d3080, name=0x39d8a7 "VOCTEL_APPTYPE") at pbx.c:4994
4994                    AST_LIST_TRAVERSE(headp,variables,entries) {
(gdb) bt
#0  pbx_builtin_getvar_helper (chan=0xed9d3080, name=0x39d8a7 "VOCTEL_APPTYPE") at pbx.c:4994
#1  0x00399a2f in voctel_cdr (cdr=0x95d9698) at voctel_engine.c:147
#2  0x080909c6 in ast_cdr_post (cdr=0x95d9698) at cdr.c:509
#3  0x0805ba19 in ast_hangup (chan=0x95d8fc8) at channel.c:734
#4  0x0807b5d9 in ast_pbx_run (c=0x95d8fc8) at pbx.c:2052
#5  0x08083171 in pbx_thread (data=0xed9d3080) at pbx.c:2064
#6  0x0069098c in start_thread () from /lib/tls/libpthread.so.0
#7  0x005eb7da in clone () from /lib/tls/libc.so.6