CAVISteamSynth: System exception - Access Violation at 0x0, reading from 0x0 HELP!

[Syko]

Hey

Ive been searching through Google and doom9 forums for the past couple of weeks, with no solution to my problem, although a few topics already on this forum about similar problems none has helped my situation or ive mis understood.

I am currently making a video for a game i play, my 4th movie now. I am using all the same settings as my last successful movie (or so i think) but now i am receiving this error at the top of the media player in red writing (while the rest of the screen goes black, this always starts after 17 Seconds into the movie):

CAVISteamSynth: System exception - Access Violation at 0x0, reading from 0x0

To make my movie i use; Sony Vegas 8.0, megui + avisynth + the x264 Codec. I am only receiving the error after i try and make the .avi file into MP4 codec, before i would use the muxer to attach the audio i have created.

Here is the simple script i use for avisynth which has always worked before in the past:

AVISource("SykoJasonMovie4.avi")
Crop(0,0,-0,-0)
ConvertToYV12()

And here are my megui Settings:

http://beta-gaming.de/et/ag0n/sets_use_4200bitrate_for_hq_clips.JPG

(NOTE: These are the settings i have followed and my megui is the latest version, on the picture i think the guy uses an old version, but these settings worked fine for me on my old project)

Here also is my System Specs if its any Help:

Intel Quadcore Q6600 (OC'd to 3.0ghz)
Nvidia GeForce 9800 GTX
2GB RAM
Windows XP

PLEASE SOMEONE HELP ITS REALLY ANNOYING :)

Thanks

-Syko

[Wilbert]

Try AviSynth v2.58.

[poisondeathray]

What format did you export out of vegas? (i.e. what codec does your .avi contain)? Do you have a proper vfw decoder enabled for it?

Do you get the same error message opening the same .avs script in vdub or avsp?

[RunningSkittle]

try
DirectShowSource()
instead of avisource

also, why are you doing a 3 pass?

[ankurs]

have a look here : http://forum.doom9.org/showthread.php?t=129302

[Syko]

-SOLVED-

Updated to version 2.58 (thought i had that version but now all works fine)

Thanks

-Syko