just tried on wordpress 3.4.2 and 3.5.0 to upgrade cpvg resulting in blank dashboard and admin pages.
Getting errors in my apache log wordpress was trying to access non existing tables like
WordPress database error Table 'WordPress.wp_3_cpvg_post_views' doesn't exist for query SELECT options\n\t\t\t\t\t\t\t\t\t\t\t FROM wp_3_cpvg_post_views\n\t\t\t\t\t\t\t\t\t\t\t WHERE name = 'page' made by require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), include('/themes/twentyeleven/page.php'), get_template_part, locate_template, load_template, require('/themes/twentyeleven/content-page.php'), the_content, apply_filters('the_content'), call_user_func_array, cpvg_process_page, referer: http://fukked-up.de/de/
And it's correct, only wp_cpvg_list_views and wp_cpvg_post_views exist, not the corresponding ones for wp_n.
Just went back to the last backup, so everything's working again but on old 0.4.2 cpvg.