Comment 25 for bug 369800

Thanks. Let us look further. Can you replace the corresponding two lines in autostart.el with these lines

    ;; Turn on `nxhtml-global-minor-mode' unconditionally
    (message "Before nxhtml-global-minor-mode, (featurep 'mumamo)=%s, mumamo path=%s"
             (featurep 'mumamo)
             (locate-library "mumamo"))
    (nxhtml-global-minor-mode 1)
    (message "After nxhtml-global-minor-mode, (featurep 'mumamo)=%s, mumamo path=%s"
             (featurep 'mumamo)
             (locate-library "mumamo"))

Then please show *Messages* after M-x emacs-Q-nxhtml.