I had this problem when I first setup procmail with elm & popclient. I deleted the offending folder and let procmail/elm recreate the folder. Since then I haven't had the problem.
If this doesn't fix your problem, let me know and I'll send you copies of my setup. > I seem to be having problems with using popclient, procmail and elm together. > I've set up popclient and procmail correctly, filtering messages well. > Elm can read folders produced locally by cron, etc.. > However, folders created by popclient + procmail cannot be read by elm. > I get "folder corrupt," and upon further investigation, the message's initial > form line is missing! -- Thomas R Behrndt [EMAIL PROTECTED]

