Whenever I import MP4 files into Sony Vegas Movie Studio Platinum 9.0, I always get this error:

-----------------

An error has occurred during the current operation.

An Exception has occurred.

-----------------

When I click "Details >>", I get this:

-----------------

Vegas Movie Studio Platinum 9.0
Version 9.0a (Build 85)
Exception 0xC0000094 (integer divide by zero) IP:0x33A76729
In Module 'mcmp4plug.dll' at Address 0x339A0000 + 0xD6729
Thread: GUI ID=0x12D8 Stack=0x129000-0x130000
Registers:
EAX=00000000 CS=001b EIP=33a76729 EFLGS=00210246
EBX=0a15f444 SS=0023 ESP=00129748 EBP=0a15f368
ECX=00000000 DS=0023 ESI=00000002 FS=003b
EDX=00000000 ES=0023 EDI=00000000 GS=0000
Bytes at CS:EIP:
33A76729: F7 F1 8B 44 24 0C F7 F1 ...D: 8B C2 33 D2 4F 79 4E EB ..3.OyN.
Stack Dump:
00129748: 00000000
0012974C: 0A15F444 0A0C0000 + 9F444
00129750: 339B25E5 339A0000 + 125E5 (mcmp4plug.dll)
00129754: 00000003
00129758: 00000000
0012975C: 00000000
00129760: 00000000
00129764: 0A15F440 0A0C0000 + 9F440
00129768: 0A15F444 0A0C0000 + 9F444
0012976C: 00000000
00129770: 00000000
00129774: 0A15F368 0A0C0000 + 9F368
00129778: 0A15F398 0A0C0000 + 9F398
0012977C: 00129BB0 00030000 + F9BB0
00129780: 00000000
00129784: 00000000
> 00129790: 77CF8BF2 77CF0000 + 8BF2 (ntdll.dll)
> 0012979C: 771877D4 77140000 + 477D4 (kernel32.dll)
> 001297A8: 77187804 77140000 + 47804 (kernel32.dll)
> 001297FC: 77155AC9 77140000 + 15AC9 (kernel32.dll)
> 00129800: 7718C4C2 77140000 + 4C4C2 (kernel32.dll)
> 00129808: 77187804 77140000 + 47804 (kernel32.dll)
> 0012980C: 77187742 77140000 + 47742 (kernel32.dll)
> 0012981C: 339B2DF7 339A0000 + 12DF7 (mcmp4plug.dll)
> 00129854: 339B22B9 339A0000 + 122B9 (mcmp4plug.dll)
> 00129894: 4E8A9378 4E890000 + 19378 (aacadec.dll)
> 001298C0: 0091DDFE 00400000 + 51DDFE (VegasMovieStudioPE90.exe)

001298C4: 030DDC28 030A0000 + 3DC28
001298C8: 00000000
001298CC: 3FF00000
001298D0: 0A23D4E0 0A0C0000 + 17D4E0
> 001298F4: 02D00500 02970000 + 390500 (vegasmoviestudiope90k.dll)
> 001298F8: 00480000 00400000 + 80000 (VegasMovieStudioPE90.exe)
> 001298FC: 00480000 00400000 + 80000 (VegasMovieStudioPE90.exe)
00129900: EB851EB8
00129904: 404DF851
00129908: 0A23D4E8 0A0C0000 + 17D4E8
0012990C: 000011B1
> 00129974: 0055005C 00400000 + 15005C (VegasMovieStudioPE90.exe)
> 00129978: 00650073 00400000 + 250073 (VegasMovieStudioPE90.exe)
- - -
0012FFF0: 00000000
0012FFF4: 00401A83 00400000 + 1A83 (VegasMovieStudioPE90.exe)
0012FFF8: 7FFDE000 7FFDE000 + 0
0012FFFC: 00000000

-----------------

How do I fix that?