On the most current version 3.1 the shadowbox effect to play videos does not work. Im sure its a simple fix, but when you click the play button, the shadow comes up but the videos (YouTube) does not play.
I did several things and it began to work.
The thing I found that probably did it for me was updating jquery.colorbox-min.js to the latest version, since the wordpress update probably replaced their version.
@primated This particular site of mine doesn’t use the shadowbox plugin, therefore that is why I couldn’t find these settings. Thanks for clarifying.
@jamessy I tried your fix with the update first and it worked, and then for clarifications sake, I removed it and it still worked. I placed it back because it doesn’t seem to cause any harm and it may help with functionality.