Problem Details :

Process:         Ardour.bin [284]
Path:            /Volumes/Ardour-4.1.405/Ardour4.app/Contents/MacOS/Ardour4
Identifier:      org.ardour.Ardour4
Version:         ??? (???)
Code Type:       PPC (Native)
Parent Process:  launchd [89]

Interval Since Last Report:          149 sec
Crashes Since Last Report:           1
Per-App Interval Since Last Report:  0 sec
Per-App Crashes Since Last Report:   1

Date/Time:       2015-07-20 12:42:37.099 +0200
OS Version:      Mac OS X 10.5.8 (9L31a)
Report Version:  6
Anonymous UUID:  F58B5C34-C992-4C27-AEC4-F789AF4FE8FE

Exception Type:  EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x000000008fe0105c
Crashed Thread:  0

Dyld Error Message:
  Symbol not found: __ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_i
  Referenced from: /Volumes/Ardour-4.1.405/Ardour4.app/Contents/MacOS/../lib/libardour.dylib
  Expected in: flat namespace

System Config :

Model: PowerMac11,2, BootROM 5.2.7f1, 4 processors, PowerPC G5 (1.1), 2.5 GHz, 8 GB
Graphics: kHW_NVidiaGeForce6600Item, GeForce 6600, spdisplays_pcie_device, 256 MB
Memory Module: DIMM0/J6700, 2 GB, DDR2 SDRAM, PC2-3200U-288
Memory Module: DIMM1/J6800, 2 GB, DDR2 SDRAM, PC2-3200U-288
Memory Module: DIMM2/J6900, 2 GB, DDR2 SDRAM, PC2-3200U-288
Memory Module: DIMM3/J7000, 2 GB, DDR2 SDRAM, PC2-3200U-288
Network Service: USB-Ethernet (en2), Ethernet, en2
PCI Card: GeForce 6600, display, SLOT-1
PCI Card: Apple 5714, network, GIGE
PCI Card: Apple 5714, network, GIGE
PCI Card: MadiXtreme, sppci_audio, SLOT-2
Serial ATA Device: WDC WD2500JS-41MVB1, 232,89 GB
Parallel ATA Device: HL-DT-ST DVD-RW GWA-4165B
USB Device: microSD RDR, (null) mA
USB Device: KVM PORT SWITCH, (null) mA
USB Device: 2.4G Keyboard Mouse, (null) mA
USB Device: USB Multimedia Keyboard, (null) mA
FireWire Device: unknown_device, unknown_value, unknown_speed