I am just migrating a site. And have come across this error when activating the theme.
Fatal error: Call to undefined function phpget_template_part() in /home/monsterm/public_html/dir/wp-content/themes/bresponzive/bresponzive/admin/widgets/widgets.php on line 1
If you comment that file out, it carries on complaining about other functions in the Widgets folder. (like twitter and flickr)
1) I have this working fine on http://arwenstudios.com/mm/
But when I copy the theme folder over to the new host, I get the issue. And being such fatal issues, the only way to get access to the site again is to rename the theme folder to quick wordpress into going back to a default.
2) I used the original theme files I downloaded instead. This did the same.
3) I spotted a new version, 1.1.0, so I download that and add it to the ftp. Same thing.
This site is needing to go live by next week, and this theme fail is holding things up.