Format error in expire.ctl

[Chris Martin]

I have now discovered why overview is increasing without limit until
it fills the buffer -- the above message.

I didn't realize that everything stopped dead at this point, I took it
to be merely advisory.

There are two linked messages, the first is "Line 23 bad format".

The line in expire.ctl it appears to be pointing to is

1:1:30:60

There are two places in EXPreadfile in expire.c where this message
appears, one connected with the "/remember/" line and one connected
with "Regular expiration line -- right number of fields?".

I've stared at this line, I've od'd it, and, when I step through
expire with a debugger, it doesn't trigger an error.

What's a mother to do?