Problem compiling Kernel

[Jon F]

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>>>Kernel build for MYKERNFILE started on Thu May 12 08:13:28 ADT 2005
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===> MYKERNFILE
mkdir -p /usr/obj/usr/src/sys

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>>>stage 1: configuring the kernel
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cd /usr/src/sys/i386/conf;  
PATH=/usr/obj/usr/src/i386/legacy/usr/sbin:/usr/obj/usr/src/i386/legacy/usr/bin:/usr/obj/usr/src/i386/legacy/usr/games:/usr/obj/usr/src/i386/usr/sbin:/usr/obj/usr/src/i386/usr/bin:/usr/obj/usr/src/i386/usr/games:/sbin:/bin:/usr/sbin:/usr/bin 
  config  -d /usr/obj/usr/src/sys/MYKERNFILE  
/usr/src/sys/i386/conf/MYKERNFILE
../../conf/files: coda/coda_fbsd.c must be optional, mandatory or standard
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
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I'm using FreeBSD 5.4 Release, this only happened when I did a CVSup,
some help would be great.
- Thanks