OK that's weird. Assuming you didn't rename or edit files then the problem is the url your trying to use to install it. Whatever way you changed example.com to yoursite.com didn't work.

Try and do it this way. Login to your WCP and as soon as you've logged in then add ?go=installpluginManager to the end of the URL.
Mr Happy Reviewed by Mr Happy on . WCDDL Modules, Plugins and Extensions WCDDL Version 3 Modules, Plugins and Extensions Now that WCDDL version 3 has got it's full release I've decided to start releasing plugins and modules for it. This thread contains WCDDL Modules, Plugins and Extensions for Version 3 only so no support will be given to Version 2. V3 is far faster, safer and easier to use so I'd advise you to consider upgrading. The modules and plugins available will be far superior to V2 as well. All plugins and modules in this thread will require the Plugin Rating: 5