The bar should be fixed now. I changed the syntax to be a little easier to figure out.
If a bar is not on a page, you have to go to the english page, and add at the top:
Many common pages will already have a bar, so it may not be necessary.
Then, you can click on the red link at the top for Español, and it will take you to a page titled Es:EnglishPageTitle
Now, edit the Es:EnglishPageTitle by pasting text in or whatever you need.
At the top, you will need a language bar too, however you do it slightly differently--You put in the lanuage code "Es" instead of "En":
Finally, if the name of the english page is different than the name of the spanish page, you can click the "MOVE" tab at the top, and move it to Es:SpanishPageTitle.
You can also do this manually with a #REDIRECT but moving is much easier.
However, if you edit the Spanish page directly without setting up the redirect, the language bar can't find the translated page.
It's fairly complicated, so look at how the Manual page was done (you were close).