Hello,
In case there is no translation of the message in another language the program automatically takes an English message as the most complete one.So, the missed Dutch messages are automatically changed to the English ones.
To make changes or translate a message, go to: Admin > System> System Static messages. Choose Dutch language > Messages and use Edit link to edit the translation.
In case this doesn't help, submit your request on
http://www.viart.com/support or to support@viart.com, describing in details the problem.
With kind regards,
ViArt Support Team