• How to install easy?

To install you should NOT move file on your own.

You should do like this:

1. Download WorlDO
2. Open .zip file (don't extract)
3. Double click on "WorlDO Setup.exe"
4. Browse your Re-volt directory
5. Install

And you haven't got any unuseful files in some kind of folder that you don't use or you don't know that it exists...