When trying to import media to the media pool i get this error. It occurs when I try and open a folder on the desktop.

Sony Vegas 5.0
Version 5.0b (Build 160)
Exception 0xC0000005 (access violation) READ:0x0 IP:0x506E08
In Module 'vegas50.exe' at Address 0x400000 + 0x106E08
Thread: GUI ID=0x95C Stack=0x118000-0x130000
Registers:
EAX=00000000 CS=001b EIP=00506e08 EFLGS=00010216
EBX=7c350420 SS=0023 ESP=001188d4 EBP=00000000
ECX=00000000 DS=0023 ESI=00119380 FS=003b
EDX=001193e6 ES=0023 EDI=00000033 GS=0000
Bytes at CS:EIP:
00506E08: 8B 10 8D 4C 24 10 51 68 ...LQh
00506E10: 9C CC 78 00 50 FF 12 85 ..x.P...
Stack Dump:
001188D4: 00000000
001188D8: 00000000
001188DC: 7C3504FF 7C340000 + 104FF (MSVCR71.dll)
001188E0: 001197B0 00030000 + E97B0
001188E4: 77FA3ED0 77F50000 + 53ED0 (ntdll.dll)
001188E8: 0B05F278 0AF30000 + 12F278
001188EC: 77E7EE3A 77E60000 + 1EE3A (kernel32.dll)
001188F0: 00000560
001188F4: 00118E38 00030000 + E8E38
001188F8: 00119074 00030000 + E9074
001188FC: 00000000
00118900: 00000000
00118904: 00000000
00118908: B936144A
0011890C: 01C35DC1 01750000 + 4E5DC1
00118910: DEA09062
> 00118950: 77E725FA 77E60000 + 125FA (kernel32.dll)
> 0011896C: 77F944A8 77F50000 + 444A8 (ntdll.dll)
> 00118974: 77E94809 77E60000 + 34809 (kernel32.dll)
> 00118978: 77E82F98 77E60000 + 22F98 (kernel32.dll)
> 00118980: 77E725FA 77E60000 + 125FA (kernel32.dll)
> 00118984: 77490311 773D0000 + C0311 (SHELL32.dll)
> 001189A4: 7749354B 773D0000 + C354B (SHELL32.dll)
> 001189B0: 77493571 773D0000 + C3571 (SHELL32.dll)
> 001189C0: 774935DD 773D0000 + C35DD (SHELL32.dll)
> 001189DC: 0044005C 00400000 + 4005C (vegas50.exe)
> 001189E0: 0063006F 00400000 + 23006F (vegas50.exe)
> 001189E4: 006D0075 00400000 + 2D0075 (vegas50.exe)
> 001189E8: 006E0065 00400000 + 2E0065 (vegas50.exe)
> 001189EC: 00730074 00400000 + 330074 (vegas50.exe)
> 001189F0: 00610020 00400000 + 210020 (vegas50.exe)
- - -
0012FFF0: 00000000
0012FFF4: 00000000
0012FFF8: 0072DE90 00400000 + 32DE90 (vegas50.exe)
0012FFFC: 00000000



any suggesstions?