First install, warning detected during restore

It sounds like you’re running into the issue mentioned below. In that case, the problem was that the original backup was multiple folders deep but the restore was “higher” up. For example:

  1. Back up E:\Dir1\Dir2\myFile.mp3
  2. Restore to myFile.mp3 to E:\ (instead of the subfolders)
  3. I SUSPECT Duplicati tries to apply the metadata from Dir2 to E:\ but since it’s a drive, not a folder, the error occurs.