I can't upload the XML export file from blogger to Wordpress.org

Using Blogger Importer by Wordpressdotorg, I tried to import the file (XML) that I have exported (under Backup)from BlogSpot but the screen just HANGED/FREEZED there after a few min!

The XML file is 34mb and the blog currently has 1980 posts.

I understood that only by completing the above task could I click on the “Start Configuration” to start the migration. PLEASE ADVISE! =(

P.S: I tried to import a dummy blog using the above method and it works! So what could be the issue???