Official moOde 7.4.y support thread

[the_bertrum]

It turns out that even if we go very deep when indexing DLNA content - to the level of a directory where there are only subdirectories with music and we will index through directories, the system freezes

I'd go deeper even than that, down into the music directory and then on to the Albums. It's only at that level where you won't have the same music repeated in several different folders. However, once you've gone to that level, you can get the same functionality but much faster over the SMB mount option. The DLNA browser is just very slow indeed. It was my first choice when I first installed moOde because DLNA was what I was used to browsing my collection over, but I soon ditched it for SMB just becasue that works so much better. I do still have my DLNA server running, and on occasion I'll use another control point (BubbleUPnP on my phone) to browse the collection and send it to my moOde player as a UPnP reciever. That way I get my RPi player sound goodness with my DLNA browsing experience.

If you have a particular reason for mounting over UPnP then it looks like you are stuck with the fact that it is very slow and can crash sometimes. On a big collection, that's going to be a pain.
However, I still suspect that the reason for it reportedly working fine in 6.x and not in 7.x is down to the mpd indexing changes. Have you tried the Folder path index option?