I am also having this problem. At first the twitter embed widget DID show up, but the containing div was too narrow for the minimum width of the widget. so even though it displayed, it was cut off on the right side because it was bigger than the column it was in.
I adjusted my website code to make the div wide enough to fully display the widget, but the widget disappeared completely. It’s been a few days and it hasn’t shown up.
I didn’t change any of the code except the class of the link to the related twitter profile (to make it match the other links in the menu.) This change didn’t affect the widget the first time.
any idea why it won’t show up?
(link: http://www.umrf.net)