When you download a file from BestNotes if you are receiving an error similar to this "/Users/bestnotes/Desktop/82MnHHPh.exe.part could not be saved, because you cannot change the contents of that folder..." use the following steps

  1. Close BestNotes.
  2. Open Finder.
  3. From the Finder menu, choose GO.
  4. At the bottom of the list select Go To Folder.

  5. Type: ~/Library/Preferences/ 

  6. Find the "com.apple.internetconfig.plist" file and delete it 

  7. Close Finder
  8. Open BestNotes

You will now be able to download files in BestNotes again.