Custompress - duplicate meta box?

Hi

I just installed the latest version of custompress (just after updating to WP 3.4). Now I have 2 duplicate custom field meta boxes on my editor screen. The first one is titled 'Default CustomPress Fields' and the other 'CustomPress Fields'.

I have marketpress installed and am using the custom fields in its 'product' custom post type.

Any ideas why this is happening?

Thanks
Andy