(MANUALLY RESET FOLDER PATHS)
"HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders"
(DROPBOX HIDDEN FEATURES)
1. Click the Dropbox icon in your menu bar or system tray.
2. Tap the Settings icon in the top right of the window, then choose Preferences....
3. Please select the Account tab, then press the Option/Alt (Mac), or press the Alt + H keys (Windows) to show more options.
4. Click the Fix Permissions button to correct it. You will get the success message: Dropbox successfully repaired the permissions in your Dropbox.