How to revolve TinyIMCE error 'The version of TinyMCE could not be detected'?
You need use the last dev version of Wysiwyg, you can read more about this here.

And you need read the Supported Editors Matrix.

I download the 3.5.11 version of TinyMCE from here and copy the tinymce folder to YOUR_SITE/sites/all/libraries/ so inside this folder you must have this:



So I have installed:

Wysiwyg 7.x-2.x-dev
TinyMCE 3.5.11

And it works ;-)