Nothing changes !

I've just bought the extention and I have a problem.

Nothing changes when I click the "Save Button". The current page is loaded without the changes I do.
In previsualisation mode is OK . I can see the changes. But not when I save : the page is still the same.

Can enyone help me ?

That's okay now it's changing. But I have an another problem. When I type a text and save, I see all the HTML code. For example I type : something in BOLD, and I see im my page: <p><strong>someting</strong></p>.

What should I do to solve that ?

When you save it to the database or before you display the data, are you encoding the characters? For example are you using htmlspecialchar(). I'm not talking about in the editor. I am referring to when you save the data.

What you are describing indicates that the html code is being encoded for display so that < is coming out as &lt; which the browser displays as < instead of interprets as code.