crash on save

My mac crashes Muse when I try to save as any type audio file. I read a previous post about this, but the answer was unsatisfactory. Here is what the trouble report said:
Date/Time: 2011-03-03 07:56:02.766 -0600
OS Version: 10.4.11 (Build 8S165)
Report Version: 4

Command: mscore
Path: /Applications/MuseScore.app/Contents/MacOS/mscore
Parent: WindowServer [59]

Version: 1.0 (1.0)

PID: 2109
Thread: Unknown

Link (dyld) error:

Symbol not found: _open$UNIX2003
Referenced from: /Applications/MuseScore.app/Contents/MacOS/../Frameworks/libsndfile.1.dylib
Expected in: /usr/lib/libSystem.B.dylib

Model: PowerMac3,6, BootROM 4.4.8f2, 2 processors, PowerPC G4 (2.1), 1 GHz, 2 GB
Graphics: ATI Radeon 9000 Pro, ATY,RV250, AGP, 64 MB
Memory Module: DIMM0/J21, 256 MB, DDR SDRAM, PC2600U-25330
Memory Module: DIMM1/J22, 256 MB, DDR SDRAM, PC2600U-25330
Memory Module: DIMM2/J23, 512 MB, DDR SDRAM, PC2600U-30330
Memory Module: DIMM3/J20, 1 GB, DDR SDRAM, PC2600U-25330
Bluetooth: Version 1.9.5f4, 2 service, 1 devices, 1 incoming serial ports
Network Service: Built-in Ethernet, Ethernet, en0
Parallel ATA Device: PIONEER DVD-RW DVR-118L
Parallel ATA Device: HITACHI DVD-ROM GD-7000
Parallel ATA Device: WDC WD5000AAKB-00H8A0, 465.76 GB
Parallel ATA Device: WDC WD400BB-75FJA1, 37.25 GB
USB Device: Hub in Apple Pro Keyboard, Mitsumi Electric, Up to 12 Mb/sec, 500 mA
USB Device: Apple Pro Keyboard, Mitsumi Electric, Up to 12 Mb/sec, 250 mA
USB Device: Hub, Up to 12 Mb/sec, 500 mA
USB Device: Photosmart C5200 series, HP, Up to 12 Mb/sec, 500 mA
USB Device: AK5371, AKM, Up to 12 Mb/sec, 500 mA
USB Device: Cruzer, SanDisk, Up to 12 Mb/sec, 500 mA
USB Device: BCM92045B3 ROM, Broadcom Corp, Up to 12 Mb/sec, 500 mA
USB Device: Hewlett Packard ScanJet 5300C/5370C, Hewlett Packard, Up to 12 Mb/sec, 500 mA