I\'m writing a tiny webpage whose purpose is to frame a few other pages, simply to consolidate them into a single browser window for ease of viewing. A few of the pages I\'
I had the same problem with mediawiki, this was because the server denied embedding the page into an iframe for security reasons.
I solved it writing
$wgEditPageFrameOptions = "SAMEORIGIN";
into the mediawiki php config file.
Hope it helps.