AVSPreview2 show wrong message

[YY1020]

I used AviSynth 2.52 to write my avs file,then used AVSPreview2 to opened and it show me message "DrvOpen err [YV12]"
My avs file below that......

#
# PLUGINS
LoadPlugin("C:\PROGRA~1\GORDIA~1\mpeg2dec3.dll")
#LoadPlugin("C:\Plugin\Decomb.dll")
LoadPlugin("C:\PROGRA~1\GORDIA~1\VSFilter.dll")
#LoadPlugin("C:\PROGRA~1\GORDIA~1\SimpleResize.dll")
LoadPlugin("C:\Plugin\MSharpen.dll")
LoadPlugin("C:\Plugin\Deen.dll")
#
# SOURCE
avisource("C:\V.avi",pixel_type="YUY2").ConvertToYV12()
#
# CROPPING
#crop(0,0,640,480)
#
#
# SUBTITLES
textsub("C:\V.ass")
#
# RESIZING
#BicubicResize(640,480,0,0.5)
#SimpleResize(640,480)
#
#
#MSharpen
MSharpen(threshold=15,strength=75,mask=false,highq=true,debug=false)
#
# 2D DENOISE
deen("a2d",2,10,12)
#

Can someone tell me how to correct it??

[sh0dan]

Can you open the script in vdub?

If not, you need an YV12 decompressor. Try installing XviD (Koepis unstable), DivX 5 or ffvfw in the install package.

[YY1020]

Originally posted by sh0dan
Can you open the script in vdub?

If not, you need an YV12 decompressor. Try installing XviD (Koepis unstable), DivX 5 or ffvfw in the install package.
Yes,i could opened the script in vdub!!
But i needed to know why the avipreview2 show a message to me??
Is it have problems??

[Mr.Shine]

There is a new version out that can use YV12 (the old version couldn't use YV12 at all it seems). As I can't read japanese, I have no idea what the requirements are, but it appears to work even without VfW decoder for YV12 installed.