Adding/defining contentdir

[pvanosta]

I am now working on a different system (my own), trying to install Minimserver on my Synology 1513+.
The package is installed. Minimwatch is on my laptop.
But now I can't browse to or add a contentdir.
The - and + on Minimwatch don't do anything other than add a line with the + when I try to populate the first line.

However it keeps telling me that whatever I am typing in is not an absolute path.

WHAT DOES THAT MEAN IN ENGLISH?

I tried
\\DISKSTATION\music

\music

prop contentDir={\music}

prop contentDir={\\DISKSTATION\music\music}

all with the same non-informative response.

Can anybody tell me what the eff the path should be?