problems with Artist.displayFormat

[simbun]

Alhifi,

MinimServer can and does combine strings with that displayFormat just fine; I'd image 80%+ of all users have something like that in their configuration.
We're trying to work out why it's not working for YOU, and that will likely be due to your files or environment, so please respect the time @simoncn spends helping customers with their installs, as I'd imagine the vast majority of the "issues" are not down to MinimServer at all.

I don't think you've covered the basics yet, so can you tell us what hardware this is running on, and whether you're having this problem with ALL your files with composer, or just some (if it were just one, it could have a rogue new line character in or something)?

I believe you've also just clarified that these files were working with MinimServer before, and that the only change was to the MinimServer configuration, so as @stefano_mbp alludes to, it could be that one of the configuration elements you're missing is renaming one tag to composer.

It would also be useful if you could upload one of your problem files somewhere for us to take a look at.