Dear all, Msys2 is delivering Hunspell 1.6 and I ran into this problem on Windows 10. Recipe: 1) emacs -q & 2) Open a file like \documentclass{article} \begin{document} Übersetzugn \end{document} 3) M-x ispell-change-dictionary RET deutsch8 RET 4) M-x toggle-debug-on-error RET 5) M-x ispell Debugger says: --8<---------------cut here---------------start------------->8--- Debugger entered--Lisp error: (error "Ispell misalignment: word ‘\334bersetzugn’ point 43; probably incompatible versions") signal(error ("Ispell misalignment: word ‘\334bersetzugn’ point 43; probably incompatible versions")) error("Ispell misalignment: word `%s' point %d; probably incompatible versions" "\334bersetzugn" 43) ispell-process-line("^Übersetzugn\n" nil) ispell-region(1 71) ispell-buffer() ispell() funcall-interactively(ispell) call-interactively(ispell record nil) command-execute(ispell record) execute-extended-command(nil "ispell" nil) funcall-interactively(execute-extended-command nil "ispell" nil) call-interactively(execute-extended-command nil nil) command-execute(execute-extended-command) --8<---------------cut here---------------end--------------->8--- The same procedure works with hunspell 1.4.1.