Some annoying problems
 There is no features for handling a group of files in the locker (deleting, moving, etc.)
This is annoying because you have to handle files one by one.
 Texts that are attached to an EndNote database carry unidentifiable names. I then have to download the text, rename them, and attach them manually.
I appreciate the useful feature of automatic attachment, but the cryptic filenames make this almost useless and causes me extra work.