MultiMan and NAS Server

Hi!

I can connect my PS3 to a NAS server within my home network
and access it properly.

But using MultiMan the NAS server does not show up at all,
neither in Mutliman's file manager nor in Multiman's XMB screen.

Does anyone has an advise?

I'm running CFW 3.55 on my PS3 slim and using the latest Multiman 2.09.02.

Thx in advance,
Fred