Indesign file damaged CS4

[druidl]

My indesign file suddenly crashed.
5 minutes ago i saved it, closed it. Next time I wanted to open it, it said
..._.indd" may be damaged. Do you want to open it anyway? pressed ok and INDESIGN crashed.
Problem report:

Process: Adobe InDesign CS4 [836]
Path: /Applications/Adobe InDesign CS4/Adobe InDesign CS4.app/Contents/MacOS/Adobe InDesign CS4
Identifier: com.adobe.InDesign
Version: 6.0.5.602 (6050)
Code Type: X86 (Native)
Parent Process: launchd [97]

Date/Time: 2010-06-13 18:48:05.661 +0200
OS Version: Mac OS X 10.6.3 (10D573)
Report Version: 6

Interval Since Last Report: 1053588 sec
Crashes Since Last Report: 39
Per-App Interval Since Last Report: 48891 sec
Per-App Crashes Since Last Report: 22
Anonymous UUID: 72CC41CD-463F-4B62-AA6D-73FEDD07F6A7

Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000000
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
...
...
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Please help it's urgent.