Mediapicker and Arkaos Mediamaster

Hello!
I am from germany, sorry for the bad english.
I am using a Hog4 on Pc with an DMX Widget to control our Mediaserver with Arkaos Mediamaster. Works, but in the Mediapicker shows not the whole Content we‘ ve got in the Mediamaster. Only some files are shown. And only four layers with files are shown
With the Jog I can scroll the whole Content. But Then I‘ ve got no preview. The PC and the Mediaserver are connected with a lan cable.

Greetings
Lucian