Settings lost after moving directories

Using Virtue Free I have moved my site from a subfolder on my host (I had put it in the “wp” folder for testing) to the root folder.

Everything works except that all the Virtue settings are back to defaults. http://www.ukcroupier.co.uk/

I did the move by:
1. Moving the folders and wp files ‘up’
2. Exporting the db in PHPadmin and changing all occurrence of the “wp” subfolder to the root folder.
3. Dropped all tables in database.
4. ** I also changed the wordpress database table prefix in the wp_config php file.
5. I then re-imported the SQL using PHP admin

If I look in the wp_options table I can see a few virtue fields which have values in them I recognise (such as the slider images) so the import has worked.

Do you have any ideas please? I’m guessing changing the table prefix may have confused things?

Thank you