Make Sure you Un-Check that last box 'LANDR Online Mastering'. If you leave it checked it will install it.
This process works perfectly as long as you don't install it without doing this first. Once Landr is installed your only hope is that you have a prior system restore point or image to restore.
You can run the Landr uninstall in the control panel/ programs and features but it still leaves files, several registry entries, and still shows up in Sonars utility menu.
Thanks for posting this bapu!