Debugger entered--Lisp error: (wrong-number-of-arguments LaTeX-label 1)
  LaTeX-label("rem")
  (and (LaTeX-label environment) (newline-and-indent))
  (if (y-or-n-p (format "Do you want a title ")) (let (...) (LaTeX-insert-environment "rem" ...) (and ... ...)) (LaTeX-insert-environment "rem") (and (LaTeX-label environment) (newline-and-indent)))
  LaTeX-rem-insert("rem")
  apply(LaTeX-rem-insert "rem" nil)
  LaTeX-environment-menu("rem")
  LaTeX-environment(nil)
  call-interactively(LaTeX-environment)