Unable to save settings on "Delivery"

Hello all,

I have installed serviio on DNS-320L. Whatever I configure in Delivery isn't saved.

Here is the log:

  Code:

-------------------------------
version : 1.4.7
class[1] : org.serviio.ui.representation.DeliveryRepresentation
path : /delivery/subtitles/embeddedSubtitlesExtractionEnabled
converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
required-type : org.serviio.ui.representation.SubtitlesRepresentation
class : org.serviio.ui.representation.SubtitlesRepresentation
field : embeddedSubtitlesExtractionEnabled
---- Debugging information ----
2016-03-14 17:58:00,339 WARN [ServiioStatusService] UnknownFieldException occured. Returning error code 500 to the REST layer. Message: No such field org.serviio.ui.representation.SubtitlesRepresentation.embeddedSubtitlesExtractionEnabled

[zip]

Which UI are you using? It looks like an old version of the WebUI.

Install 1.6 which already comes with built-in web interface.

I downloaded Serviio Add on from this site http://dlink.vtverdohleb.org.ua/Add-On/? and the latest version there is 1.04 I know there is a version 1.6, but this site has no such version. I find v1.06 on other sites but can't install them because can't install ffp

Regards,
Petar