Expected behaviour:

Automatically add torrents to uTorrent Web UI using uppercase or lowercase on drive letters and/or path.

Actual behaviour:

If drive letter (z:) is configured as lowercase in one end and uppercase (Z:) in the other end, Flexget fails to add torrents to the proper directory and adds them to the root.

Steps to reproduce:

configure Flexget with a lowercase drive letter

utorrent:
  url: http://172.17.0.120:8087/gui/
  username: admin
  password: mypassword
  path: z:\videos\tv\

configure uTorrent Web UI with an uppercase drive letter:

Wait for a torrent to be available and you should get this message:

path z:\videos\tv\ShowName\Season 3 (or one of its parents)is not added to utorrent webui allowed download directories. You must add it there before you can use it from flexget. Adding to default download directory instead.

All details of this problem are in this thread:

https://discuss.flexget.com/t/configuring-utorrent-webui-allowed-download-directories-for-flexget/3895/3