ok, I found the solution. It works as below in both html or viewer mode.
[vimeo vimeo.com/145325]
the old code below does not work now!
[vimeo 145325]
I have the same problem only today. It was ok for a while. The reason should be due to Vimeo Plus. With the new policy, they have some special codes for embedding. Some folks will have HD embedding. I guess we have to hang on a while till WordPress figures how to relink us with the shortcut key. I guess a new shortcut is required or the old ones will be screwed!
