evaluation button in sage notebook 6.4
I have just upgraded to Sage 6.4. But now, when I use the notebook() environment, there is no evaluation button after a block. Also, pressing shift+enter only starts a new line, but does not initiate evaluation?
Currently my only option to use the evaluate all functio, but this is unsatisfactory.
What can I do?
Thank you in advance.
EDIT: This problem seems to be firefox related, since in safari I have the option