Cannot switch off Twonky

[paynni]

(15-12-2017 18:22)paynni Wrote:  I've just purchased a new Melco S and have updated it with the latest software. However I cannot turn off Twonky by editing minimserver.options file from "false" to "true". My iMac simply won't allow me to overwrite the text. Help please.

I'm running Version 3.72 and if you browse to Settings/Media Server, the next level down is "Update music database". No sign of /Twonky Service/Off-On.