That and swapping the 2 and the ~ back to their original places made the snippet work for me.
> 14 sep. 2021 kl. 22:08 skrev Brian Barker <b.m.bar...@btinternet.com>: > > At 14:55 14/09/2021 -0500, Carlos Martinez wrote: >> ... >> \slashedGrace { e8\downbow } <a, fis'>~2\(<a fis'>8 <a e'>8\)--\downbow | >> >> But I am getting an error > > Er, what error?! > >> I can't seem to get what the problem is? > > In your e-mail message, that prime after the first "fis" is a smart > apostrophe (close quote) instead of the straight prime it should be. Is that > your problem? > > Brian Barker >