I've got the exact same error.
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
I'm using an up-to-date system, AFAIK (Suse 7.1 + upgrades):
Linux dexter 2.5.1-pre1 #5 Tue Nov 27 13:55:35 CET 2001 i586 unknown
Gnu C 2.95.3
Gnu make 3.79.1
binutils 2.10.91.0.4
util-linux 2.10q
mount 2.10q
modutils 2.4.2
e2fsprogs 1.25
pcmcia-cs 3.1.22
Linux C Library x 1 root root 1382179 Feb 28 2001 /lib/libc.so.6
Dynamic linker (ldd) 2.2
Procps 2.0.7
Net-tools 1.57
Kbd 1.02
Sh-utils 2.0
Modules Loaded ipt_MASQUERADE ip_nat_ftp ipt_state ipt_LOG ipt_limit iptable_nat iptable_filter ip_conntrack_irc ip_conntrack_ftp ip_conntrack ip_tables ne 8390 tulip es1370 soundcore
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