Hello 

I just upgrade to the last gnus-git, and 
I have the following setting

(setq gnus-message-archive-group
	  '((if (message-news-p)
			'("sent-news")
		  '("sent-mail"))))

When I want to enter the group (which worked fine with no gnus 0.18) I
obtain an error I attach


Uwe Brauer