my pages - infact all my iwork programs have siezed to function?

Process: Pages [1476]

Path: /Applications/iWork '09/Pages.app/Contents/MacOS/Pages

Identifier: com.apple.iWork.Pages

Version: ??? (???)

Build Info: Pages-7660000~4

Code Type: X86 (Native)

Parent Process: launchd [123]

Date/Time: 2011-04-30 13:24:05.093 +0100

OS Version: Mac OS X 10.6.7 (10J869)

Report Version: 6

Interval Since Last Report: 166541 sec

Crashes Since Last Report: 10

Per-App Crashes Since Last Report: 6

Anonymous UUID: 21ACC882-B92D-4A1F-A340-0DF576D65CDA

Exception Type: EXC_BREAKPOINT (SIGTRAP)

Exception Codes: 0x0000000000000002, 0x0000000000000000

Crashed Thread: 0

Dyld Error Message:

Library not loaded: /Library/Application Support/iWork '09/Frameworks/Inventor.framework/Versions/C/Inventor

Referenced from: /Applications/iWork '09/Pages.app/Contents/MacOS/Pages

Reason: image not found

Binary Images:

0x8fe00000 - 0x8fe4162b dyld 132.1 (???) <A4F6ADCC-6448-37B4-ED6C-ABB2CD06F448> /usr/lib/dyld

Model: MacBookPro5,3, BootROM MBP53.00AC.B03, 2 processors, Intel Core 2 Duo, 2.8 GHz, 4 GB, SMC 1.48f2

Graphics: NVIDIA GeForce 9600M GT, NVIDIA GeForce 9600M GT, PCIe, 512 MB

Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB

Memory Module: global_name

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.10.131.36.9)

Bluetooth: Version 2.4.0f1, 2 service, 19 devices, 1 incoming serial ports

Network Service: AirPort, AirPort, en1

Serial ATA Device: FUJITSU MJA2500BH FFS G1, 465.76 GB

Serial ATA Device: MATSHITADVD-R UJ-868, 557.1 MB

USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0x26500000

USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0x24400000

USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000

USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8213, 0x06110000

USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0237, 0x04600000

USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x04500000

can anyone help? they just crash on start?