[tjost]

with estuary

just play party modus

with my skin

I don't have a "Party Modus" so without knowing what steps you are taking to produce the crash, I'm unable to investigate further.

If I...:
1. Navigate down to "Music"
2. Click on the "Playlists" category widget
3. Click on "Party mode list"

then I'm shown an "Edit smart playlist" dialog.

What now? Is this what you are calling "Party Modus"? Or is "Party Modus" an add-on? I really have no idea. Maybe some screenshots? Even better, a video? 

In Estuary you click on Music -> titles -> then left and there is  switch to start Party Mode This should load a bunch of song ins random and then play.