Serviio for MAC will not detect media files on my computer

I have downloaded Serviio for MAC, but when I go to select a folder in the shared folders area nothing shows up to pick from except for generic folders on my computer like Applications, bin, cor etc. How do I get Serviio to find a specific folder on my computer?

[zip]

you can try to write the path in the field manually, rather than picking it up via the Browse button