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We have a very weird problem with one of sites running WordPress. Suddenly, TinyMCE visual editor stopped working. It just disappeared, and we only got the weird:

realTinyMCE is not defined

error in the console.

Of course  visual editor was turned on in users preferences and all that stuff. Switching to a different theme was solving the problem.

Turned out that the problem was in the functions.php file which was located in WordPress current theme's directory. And the reason was the most weird one you can imagine! We had several excessive line breaks after the php closing tag!!

Have a look at these pictures:

Take  notice of these 2 excessive line breaks after the closing tag of the functions.php file.

Just remove them…

And everything's back to normal again!

So, check that the functions.php file in your current WordPress theme doesn't have any excessive line breaks after the closing php tag.

This entry was posted on Friday, December 7th, 2007 at 2:44 pm and is filed under WordPress. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.