Using SA_OAuthTwitterEngine, we no longer get an access token (the box is blank). Just started happening, so that when the web dialog returns after entering the username and password to authorize the app, the webview is blank. You can see, before getting a blank page, that the usual token key div or box is now blank, where it used to display the token key that we would grab from the web page to use in the app.
We have reset the parameters for the Twitter app used, made sure it is read and write, made sure the callback url is a valid url (although this has never mattered in the past), etc.
Anyone else having this problem?