Cannot see subfolder in PS3

Hi everybody.

Just installed serviio 0.51 on DS211j. I am testing at the moment and have come across a problem. I have images stored on the NAS and serviio library has been given a path to that folder, but any subfolders in there are not shown on the PS3.
In Presentations tab in serviio all image options are default (display category).

Anybody knows a workaround?

[Cerberus]

are the permission set to allow access to thoughs folder and on a fresh install it can take upwards of 24hours to fully add all files to your library, i would advise upgrading to 0.5.2 aswell