Sansa Fuze sometimes renames a directory - why?

[nturgeon]

I had the same problem too, and it only happened in MTP mode (which auto-detect seemed to choose) on directories that I had entered manually (as opposed to copied from my PC).  When I copied the full artist directory (with all album subdirectories), no problem.  But if I didn’t want all albums, I was creating a directory manually for the artist, and then only copying the albums I wanted.  In this case the folder names would become all mixed up (sometimes renamed to “New Folder” as well).  This must be a bug in their MTP handling.  So now I switched to MSC mode and all seems well.