I was trying to install a free theme (fashionista) using system>web setup wizard>component manager. It completed readiness check and backup steps during installation.
During the next step (new purchase status page) it started installation and showed the text
update application is running
But it took very long and showed the message 'script stopped or not responding'. It gave the option to continue or stop the script. Whatever I choose, the page (and browser) was not responding after that.So I closed the browser.
Then I rolled back the media and code using the following command
magento setup:rollback -c filename -m filename
But now when I go to system>web setup wizard, it opens a blank page(page title 'magento updater', URL- magento/update/index.php ).
How can I resolve it ? Please help.