In Android 4.4 KitKat, Google removed permissions for apps to manage files on the SD card. (More on that here.) To get around this, Vaulty has to internally keep a record of which files are marked as deleted since the file itself cannot be removed. If Vaulty’s record of deleted files is reset, by a reinstall, for example, then the files that had previously been marked as deleted will reappear. To get around this and reenable full functionality in Vaulty, you can manually transfer those files on the SD card to your phone’s internal storage.