Michelle Kittleson, I noticed that you posted a problem with the PAM in R 1.9.0. (I pasted your post below in case you forgot.) I am having the same error that you had. I did not see a response to your question, but did you happen to figure out what R was doing? Any help would be greatly appreciated. Thanks. Mark Betten Van Andel Research Institute 333 Bostwick Ave. NE Grand Rapids, MI 49503 USA This email message, including any attachments, is for the so...{{dropped}}