In mine, mfefolders app closes also after a while. Didn't time it but it is something like a couple of minutes max. I had to open it several times to complete my ideal setup. The good thing is that it writes immediately the changes in the db so they are not lost when it crashes. The bad is that you need to start from the top of the list and scroll slowly down - but that scrolling a long list is a general issue for Meamo 5 in my opinion. Finally, the ugly is that it doesn't show the tree structure of the folders and subfolders but it just gives a flat list.