problem building custom rom.. help

[mashi]

C:\mda>perl typhoonnbfdecode.pl -r os=04e3d4c0-OS.nb -p docuniqueid=00000000572902022a0604a91b0b05d7 -p blversion=1.08.0000 -d testos.img
read 03900000 for os from 04e3d4c0-OS.nb
no ECEC at 0x40 in OS image

how can I fix this issue ?
thanks