HELP! with config <config file>

[newhouse%rockhead.com@localhost (Paul Newhouse)]

running NetBSD 3.1

I built a source tree 5.0 at:

.../NetBSD/usr/src/sys/arch/i386/conf

I created a config file "BIGBOX".

When I run config I get:

bigbox# config BIGBOX
../../../../conf/files:5: syntax error
../../../../net/files.pf:24: syntax error
../../../../net/files.pf:25: syntax error
../../../../net/files.pf:26: syntax error
../../../../conf/files:187: syntax error
../../../../conf/files:252: syntax error
../../../../ipkdb/files.ipkdb:5: syntax error
../../../../dev/raidframe/files.raidframe:6: syntax error
../../../../dev/wscons/files.wscons:36: syntax error
../../../../conf/files:1194: syntax error
../../../../conf/files:1198: syntax error
../../../../conf/files:1223: syntax error
../../../../conf/files:1225: syntax error
../../../../miscfs/procfs/files.procfs:3: syntax error
../../../../dev/pad/files.pad:3: syntax error
../../../../lib/libx86emu/files.x86emu:1: syntax error
*** Stop.

This used to work under 3.1 and earlier.

Where did I go wrong?

TIA,
Paul