Unable to view all folder.jpg files via folder view

[rich28]

I've bought MinimServer 2 and like others I’m keen to be able to see artist artwork. I understood this can be achieved via ‘folder view’ and have begun the process of creating a folder.jpg file for each album artist in my collection. This got off to a good start with each jpeg showing up, but I seem to have hit a limit, in that some of jpegs I’ve created for this purpose aren’t visible. I’ve checked that these files have correctly been given the name folder.jpg; and performed a rescan as well as a restart but that didn’t help. My collection isn’t particularly large incidentally, but its eclectic and probably features about thousand different album artists. Any pointers or advise will be really appreciated – thanks.