@ Mala,
That's because you haven't copied the contents of the "CustomUI.2.0.beta2" folder yet. You need to copy the "customui", "objects", and "startup" folders into the 'moi' folder. Select "Replace" if Windows asks.

The 'moi' folder structure should look like this:

Moi
├── commands
├── customui
├── objects
└── startup
Other files and folders stay the same.

The commands downloaded from the forum or website (those consisting of .js and .htm files) should be placed directly in the 'commands' folder. Do not place them inside any subfolders; move only the files themselves.