I tried to use Autostreamer 1.29 to add Windows XP sp2 to a XPsp1a installation disk. When it is done streaming the ending ISO is missing IUCTL.dl_. I tried both using the original disk and a local copy of xp. Both came out missing IUCTL.dl_. I found it missing IUCTL.dl_ when I tried to compile WUBCD version 2.1. I was able to add the file IUCTL.dl_ to my local copy of xp and it then compiled WUBCD 2.1 ok. WUCD 2.1 seems to work ok after adding IUCTL.dl_ manually.
Jim