Having the same issue with youtube.

problems with youtube too (I've just updated what you've released a few days ago)

Same here, issues with Youtube. Videos aren't being embedded and I'm getting this description while trying to click the link: External Embedding Not Available.

Hope to get a fix soon as because our users can't live without Youtube :D

Just turn validation off, guys.

sorry for not understanding you, by "validation" you mean

Validation This is an optional regular expression that can be used to test if the destination page supports external embedding. Note that this option will only work if the Extract Destination Data setting is enabled (and working).

value="http://www\.youtube\.com/v/([\w\-]*)?&

I need to erase it? how do I turn it off?

edit, just erased the validation part and it's working..
I wonder what's the difference..

You can do that, but all you really needed to do was uncheck the box.

Validation checks to make sure that videos don't have external embedding disabled before bothering to embed them. Hence the mouseover that says "External Embedding Not Available". If the definition can't find a match to that RegEx, it skips embedding and puts a link instead. Since YouTube changed the formatting of their page, the current validation RegEx will never find what it's looking for.

Uncheck this box.? (change from yes to no in YouTube Definitions.?)
I dont see any check box next to "Validation"

I was struggling to find a checkbox for "validation", but I believe what DJ is referring to is the setting called "Extract Destination Data". At least that's what it's called on my installation. I turned that off and YouTube videos are now correctly showing once again. Remember, on existing posts you have to go in and edit the post and save it.

*edit - Should have refreshed the page before posting my reply. :)

Perfect! Thank you.

To anyone this helps, mine says:

Extract Info

not Extract Destination Info or Validation.

:shrug: