When I run SEO Ultimate plugin at the same time as the theme I get this error when I go to Appearance->Customize:
Fatal error: Cannot redeclare get_plugin_data() (previously declared in /home4/harvestp/public_html/wp-admin/includes/plugin.php:72) in /home4/harvestp/public_html/wp-admin/includes/plugin.php on line 106
If I deactivate the SEO Ultimate plugin I can access the page without issue.
Obviously this would suggest a conflict with that plugin. However, it is a popular plugin. Any advice?