>>>>> In <b4m64uqm7nw.fsf@jpl.org> Katsumi Yamaoka wrote:

> If it is possible, please show me personally your .newsrc.eld
> file.  I may be able to write a Lisp program to fix it.

Thank you for sending it.  However, I didn't find any oddity in
your .newsrc.eld file.  `gnus-newsrc-alist' contains some nntp
groups connecting to some servers, nnml groups using the
nnml:softace server and one nnfolder group in question.
`gnus-server-alist' has a single element which defines the
"archive" server.  They are summarized as follows:

(setq gnus-newsrc-alist '(...
      ("nnfolder+archive:all" 6 nil nil
       (nnfolder "archive"
		 (nnfolder-inhibit-expiry t)
		 (nnfolder-directory "~/Mail-softace/sent-mail/")
		 (nnfolder-active-file "~/Mail-softace/sent-mail/active")))
      ...))

(setq gnus-server-alist
      '(("archive" nnfolder "archive"
	 (nnfolder-get-new-mail nil)
	 (nnfolder-inhibit-expiry t)
	 (nnfolder-directory "~/Mail-softace/sent-mail/")
	 (nnfolder-active-file "~/Mail-softace/sent-mail/active"))))

The `all' group entry specifies the server explicitly by itself,
and there's neither other `all' group nor other `archive' server.
The problem is `nil nil' in the `all' group entry which suggests
there's no article.  Though I couldn't reproduce the problem,
could anyone please try it again?  The message Jarl posted first
is below: