Media Servers

I can't seem to access my streaming Media Server from Opus.
It is visible but it timeout when I try to click on it.
Using Win8 default explorer I can instead browse the files in the media server properly.
Is there maybe any setting to change? (I'm on DO 10.5.2.0)
Thanks in advance!

Which kind of media server is it? Which protocol does it use, e.g. is it a normal network share which you can map a drive letter to, or something using UPnP or similar?

How it appears in the My Computer folder usually indicates the type of server.

Sorry, I should have mentioned I am using UPnP servers.
Mezzmo on my PC and BubbleUPnP on my Android Box.
Both servers are accessible trough Win8 explorer but are unresponsive if I try to open them from Opus.