Im desperate... final year project in flash crashes

Hi guys
I tried google with not help
i got win 7 ultimate 32bit and flash cs3 (9.0)
im working with AS2.0
my project always crashes when i try to go to different scenes

Problem signature:
Problem Event Name: APPCRASH
Application Name: Flash.exe
Application Version: 9.0.0.494
Application Timestamp: 46015140
Fault Module Name: ntdll.dll
Fault Module Version: 6.1.7600.16695
Fault Module Timestamp: 4cc7ab44
Exception Code: c0000005
Exception Offset: 00028ab2
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1032
Additional Information 1: e8ad
Additional Information 2: e8adce1c2b9e7be834b4063ac3c53863
Additional Information 3: e8ad
Additional Information 4: e8adce1c2b9e7be834b4063ac3c53863