Serviio Network Shared Folder Music

It seems to be that if I specify a folder full of music thats on a 'mapped' network drive it does not add the music to my library. Nothing at all happens, not even with force refresh.
I don't know if this happens with films either but its happened on to seperate computers / network shares for me
I don't know if this happens with films either but its happened on to seperate computers / network shares for me