@willysr: THANK YOU! It works!
First I tried the original slackbuild with version 2.32.1 and it compiled without error, but when I installed and tried to start it, it exited with the error message:
(brasero:30548): GLib-GIO-ERROR **: Settings schema 'org.gnome.brasero.config' is not installed
So I removed totem-pl-parser, compiled version 2.28.3 without error and it worked fine.
Then I installed totem-pl-parser again and tried your new slackbuild for version 2.32.1 and it works GREAT!