That question has been answered as recently as this thread:
https://news.povray.org/povray.off-topic/message/%3Cweb.6a23f45069259b1fd1d09a9825979125%40news.povray.org%3E/#%3Cweb.6
a23f45069259b1fd1d09a9825979125%40news.povray.org%3E
Just don't use any UTF-8 characters and all should be fine.
- BE