gnus-delay fails partially

[Igor Sosa Mayor]

Hi,

I attempted to have a mail delayed, but when its time came, I got the
stack trace below.

The problem is: the mail is being sent, but the mail is not removed from
nndraft:delayed...

Debugger entered--Lisp error: (wrong-type-argument stringp nil)
string-match("^[^:]+:" nil)
gnus-request-group(nil)
nnmail-expiry-target-group(nil "delayed")
nnmh-request-expire-articles((1) "delayed" "" t)
apply(nnmh-request-expire-articles ((1) "delayed" "" t))
nnoo-parent-function(nndraft nnmh-request-expire-articles ((1) "delayed" "" t))
nndraft-request-expire-articles((1) "delayed" "" t)
gnus-request-expire-articles((1) "nndraft:delayed" t)
gnus-draft-send(1 "nndraft:delayed")
gnus-delay-send-queue()
run-hooks(gnus-get-new-news-hook)
apply(run-hooks gnus-get-new-news-hook)
gnus-run-hooks(gnus-get-new-news-hook)
gnus-group-get-new-news(nil)
call-interactively(gnus-group-get-new-news nil nil)

[Lars Ingebrigtsen]

Post by Igor Sosa Mayor
Debugger entered--Lisp error: (wrong-type-argument stringp nil)
string-match("^[^:]+:" nil)
gnus-request-group(nil)
nnmail-expiry-target-group(nil "delayed")
nnmh-request-expire-articles((1) "delayed" "" t)

Do you have `nnmail-expiry-target' set to nil?