Asterisk 1.4.18 crashing with exit status 127

Does anyone know why Asterisk crashes with exit status 127 when making a SIP call. I enabled the debug to console and the last part of the output is listed below…

[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 0: SIP/2.0 100 Trying (18)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 1: v: SIP/2.0/UDP 192.168.0.5:14186;received=192.168.0.5 (53)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 2: f: “jeun” sip:jeun@router-166.home;tag=81f7a571fb4c4b309471a30bd40da4a8;epid=c59222531b (89)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 3: t: sip:1002@router-166.home (29)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 4: i: eed48e499dad45a28bf609b429e2f4e6@192.168.0.5 (47)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 5: CSeq: 2 INVITE (14)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 6: User-Agent: Asterisk PBX (24)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 7: Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY (66)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 8: k: replaces (11)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 9: m: sip:1002@192.168.0.1 (25)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 10: l: 0 (4)
[2008-04-23 12:27:41] DEBUG[20286]: chan_sip.c:4773 parse_request: Header 11: (0)
[2008-04-23 12:27:41] DEBUG[20286]: devicestate.c:304 __ast_device_state_changed_literal: Notification of state change to be queued on device/channel SIP/jeun-09061710
[2008-04-23 12:27:41] DEBUG[20282]: devicestate.c:161 ast_device_state: No provider found, checking channel drivers for SIP - jeun-09061710
[2008-04-23 12:27:41] DEBUG[20282]: chan_sip.c:15805 sip_devicestate: Checking device state for peer jeun-09061710
[2008-04-23 12:27:41] DEBUG[20286]: devicestate.c:304 __ast_device_state_changed_literal: Notification of state change to be queued on device/channel SIP/jeun

Any help would be greatly appreciated.