Many issue in the bacend after update to 3.0.1

Hello.
I’m having some issues from 3.0 and now also with 3.0.1

1) I caann’t to click on the tab TEXT but only VISUAL when add a new post or if I want to see post already published

2) The button ADD MEDIA isn’t working.

3) I haven’t any feedback on this box https://www.dropbox.com/s/m0s3i1oa1qnuoaf/Schermata%20del%202015-11-18%2016%3A49%3A01.png?dl=0

I don’t know if there is other issues because these are very important.

I have changed browser (firefox and Chrome) and deleted cache…but without solve their.

Thanks for any support