QuENC 0.70

I can't make it to work with OPV ( 1 PASS VBR )

here is my CLI options :

QuEnc -i script.avs -o multiplex.mpg -b 8300 -maxbitrate 9800 -dc 10 -priority 3 -1 -vbr -mpeg2mux dvd -hq -audiobitrate 256 -aspectratio 4:3 -auto -close

and the script.avs is this :

LoadPlugin("blockbuster.dll")
LoadPlugin("deen.dll")
LoadPlugin("aWarpSharp.dll")
LoadPlugin("aSharp.dll")
LoadPlugin("UnDot.dll")
DirectShowSource("tom yum goong.avi")
AssumeFPS(25,true)
ConvertToyv12()
Blockbuster(method="noise",detail_min=1,detail_max =10,variance=0.3,seed=2)
aSharp(1,4)
UnDot()
Tweak(hue=4,sat=1.3,bright=0,cont=0.9)
Lanczos4Resize(720,468)
AddBorders(0,54,0,54)

2 PASS is OK

1 PASS makes QuEnc 0.70 to close immediately

* edited *

source has PCM uncompressed audio

it seems to work only when I set the -mpeg2mux switch to SEPARATE...

Is this a bug or I'm doing something wrong ?