Problem updating userland

[Arthur Barlow <arthurbarlow%earthlink.net@localhost>]

I'm new to NetBSD and I thought I would following the procedure on the  
web site describing how to update my code base.  I used cvs and pulled  
down the 4-0-1-release and I also did the "cvs update -Pd" in /usr/ 
src.  That all appeared to go fine.  However when I tried to do "./ 
build.sh -O ../obj -T ../tools -U -u distribution", in /usr/src, it  
started to compile and build objects, but then it crashed in "/usr/src/ 
sys/modules/accf_dataready/."  The error message says it is looking  
for an include make file, "bsd.kmodule.mk."  But, when I do a find or  
locate the file does not exist on my system.  What did I forget?   
Thanks.