random error frames in video encoded by megui

[pokazene_maslo]

Hello. I'm encoding Babylon 5 from DVD to x264 and in one episode I have strange error frames. I uploaded 13 second cut so you can see how it look like. link: http://rapidshare.com/files/248898407/sample.mkv.html

software used: megui 0.3.1.1033-0.3.1.1044 i don't remember exact version
avs script: # Set DAR in encoder to 31 : 17. The following line is for automatic signalling
global MeGUI_darx = 31
global MeGUI_dary = 17
DGDecode_mpeg2source("E:\Download\torrent\BABYLON5_SEASON1_DVDs\VIDEO_TS\VTS_01_1.d2v", info=3)
ColorMatrix(hints=true, interlaced=true, threads=0)
Load_Stdcall_Plugin("C:\Program Files (x86)\megui\tools\yadif\yadif.dll")
Yadif(order=-1)
#crop
#resize
fft3dGPU(sigma=2, precision=2, sharpen=0, plane=4)

trim(125725,188609)
x264 core 67 r1162M f7bfcfa
settings: program --pass 2 --bitrate 741 --stats ".stats" --level 3.1 --ref 11 --mixed-refs --no-fast-pskip --bframes 3 --b-adapt 2 --weightb --direct auto --deblock -1:-1 --subme 9 --trellis 2 --partitions all --8x8dct --vbv-bufsize 14000 --vbv-maxrate 17500 --qcomp 0.7 --me umh --threads 2 --thread-input --progress --no-dct-decimate --no-psnr --no-ssim --output "output" "input"

what is causing these problems??
Thanks.

[Guest]

Does it happen when just playing the script in VirtualDub?

If yes, remove everything but the source filter. Does it stillhappen?

[Dark Shikari]

I don't see any issues in the sample you uploaded...

[Sharktooth]

megui latest version is 0.3.1.1046. x264 latest version is rev. 1173. please UPDATE to the latest versions before thinking to post.
also, megui does not encode... it's a GUI for encoders. so, your problem, in the worst case, may be related to x264, avisynth or the decoder used... but not directly to megui.

[Inspector.Gadget]

The scene cuts for a single frame to an alternate camera angle. That is likely also the case with your source. Please check.

[pokazene_maslo]

When playing avs script everything looks fine. I'm going to encode it once more with newer x264. I will report then.
Sharktooth: I was encoding it with latest tools available then. And I know that megui is only a gui, I had to decide to what section post this, this seems as a logical choice.

Edit: new encode is without issues, anyway thanks for your help.