Vegas 8 Pro crash.

[Amplified]

Hello.
Ive been able to open a project Ive been working on for afew months but today, randomly it gave me an error message with these details:

Sony Vegas Pro 8.0
Version 8.0a (Build 179)
Exception 0xC0000005 (access violation) READ:0x0 IP:0x5A414C
In Module 'vegas80.exe' at Address 0x400000 + 0x1A414C
Thread: GUI ID=0xADC Stack=0xFD000-0x130000
Registers:
EAX=0abc5100 CS=001b EIP=005a414c EFLGS=00210246
EBX=00000000 SS=0023 ESP=000fdf84 EBP=7c80aa97
ECX=00000000 DS=0023 ESI=00000000 FS=003b
EDX=7c90eb94 ES=0023 EDI=11b384b8 GS=0000
Bytes at CS:EIP:
005A414C: 8B 01 3B C6 89 44 24 4C ..;..D: 89 74 24 14 0F 8E 34 07 .t..4.
Stack Dump:
000FDF84: 00000000
000FDF88: 11B384B8 11750000 + 3E84B8
000FDF8C: 00001E75
000FDF90: 0A437CE4 0A3F0000 + 47CE4
000FDF94: 00000000
000FDF98: 00000001
000FDF9C: 00000001
000FDFA0: 00000001
000FDFA4: 00000000
000FDFA8: 00000000
000FDFAC: 00000000
000FDFB0: 00000000
000FDFB4: 01801AD8 017D0000 + 31AD8
000FDFB8: 00000001
000FDFBC: 00000000
000FDFC0: 00000000
> 000FDFC8: 01DA0903 01D60000 + 40903 (xfire_toucan_29183.dll)
000FDFCC: 0ABC5100 0A3F0000 + 7D5100
000FDFD0: 00000001
> 000FDFD4: 77D38808 77D30000 + 8808 (USER32.dll)
000FDFD8: 7F5614A4
> 000FE1F4: 00690057 00400000 + 290057 (vegas80.exe)
> 000FE1F8: 0061006E 00400000 + 21006E (vegas80.exe)
> 000FE1FC: 0070006D 00400000 + 30006D (vegas80.exe)
> 000FE200: 006D0020 00400000 + 2D0020 (vegas80.exe)
> 000FE204: 00640065 00400000 + 240065 (vegas80.exe)
- - -
0012FFF0: 00000000
0012FFF4: 00000000
0012FFF8: 0083C9AB 00400000 + 43C9AB (vegas80.exe)
0012FFFC: 00000000

After clicking OK Vegas shuts down. I was able to open the .bak file but half of the project was cutoff and when I worked with it for 10 minutes Vegas crashed and then when I tried to open it again It gave me the crashmessage again.

Specs:
Intel(R) Core(TM)2 Duo E6750
Geforce 8800GT
OCZ Platinum DDR2 PC6400 2048MB
Windows XP Pro SP2

Ive pretty much tried everything except reinstalling windows.

Thanks in advance!