[21.5, Gnus] Can't send signed mails

Hi! When I try to send a signed message using both Gnus and XEmacs 21.5 from CVS I get the following trace: Debugger entered--Lisp error: (syntax-error "Containing expression ends prematurely") scan-sexps(3053 1) forward-sexp(1) mml-read-tag() mml-parse-1() mml-parse() mml-generate-mime() message-encode-message-body() message-send-mail(nil) message-send-via-mail(nil) message-send(nil) message-send-and-exit(nil) call-interactively(message-send-and-exit) (dispatch-event "[internal]") This does not happen if I use a 21.4 XEmacs, so I guess the problem is XEmacs rather than Gnus related. Does anyone else see something similar? Thanks, norbert.