I received the error message
"Fatal:perl:die Perl died
/home/jvegh/REPO/LaTeXML/DANCES/doc/manual/manual.xml:17285: validity error : ID StokesCurrent already defined"
I accidentally pasted a text block twice, and there were really two definitions.
I am not sure, however, that Perl must die for that. A warning must be sufficient.
Regards
Végh, János