I updated to 2.4.19 and now the Forum settings link in the admin goes to a HTTP ERROR 500 page
All other links in the admin area seem to work.
Can you please reupload the file
includes/admin.inc.php? Maybe you forgot to upload it?
I've tested the fresh installation and also the update from a minor version of the forum and especially I tested the settings page (main and enhanced) because of the related changes and everything worked. This and my own forum got updates to 2.4.19 and I can change settings here and there (with the exception of a white page during a test here, next attempt succeeded).
I've absolutely no clue, what could have gone wrong.
Trenne niemals Müll, denn er hat nur eine Silbe!