Recently I migrated my web to a new server and since then it is impossible to use the pop-up boxes in the settings of the bulletins. For example, I can not add images to newsletters. Nor can I create links or edit the features of the automatic newsletters I created before this problem occurred. In these cases the box opens but does not show its contents, or simply remains rotating the sprocket without the box appears.

I suspect that the problem has to do with attributes of some folder. Do you have any idea what might have happened?

You can see a screenshot at http://imgur.com/a/XPZO1. There the blank box is displayed (I was trying to edit a link created before the problem occurred).

Another screenshot: http://imgur.com/a/GPCbZ. Shows the sprocket rotating. Never appears the box to edit the content.

I hope you can help me!

Thanks!

Jorge