I have just made a fresh installation of NS 4.3 on Debian 7 Wheezy following the install guides. I am able to log in to admin panel, I also see the usual warning on the frontpage that no theme and no publications is created.
The import reported as successful, however I am not able to see it in the admin panel "Theme Management". There is only the Empty theme. I do refresh in browser, clear cashe....nothing.
Then using the command line I browse to:
root@folketsforlag:/var/www/newscoop/themes/unassigned# ls empty theme_1 theme_2
I can see the New Custodian is imported (I tried twice), but as I say it does not show up in "Theme Management", so I can not assign it to a publication.