[Plugin: Slideshow Gallery Pro] Pro version broken on 3.1

I emailed about this a couple of weeks ago but never heard back, maybe posting here will be better. I donated and received the “pro” version, but when I install it on a localhost WP 3.1 install I get the following error on the configuration page, under “Navigation Buttons”. The rest of the configuration page does not load.

Warning: require(C:\xampp\htdocs\UT-ssw\wordpress/wp-content/plugins/slideshow-gallery-pro/pro/settings-navbuttons.php) [function.require]: failed to open stream: No such file or directory in C:\xampp\htdocs\UT-ssw\wordpress\wp-content\plugins\slideshow-gallery-pro\views\admin\metaboxes\settings-styles.php on line 8

Fatal error: require() [function.require]: Failed opening required 'C:\xampp\htdocs\UT-ssw\wordpress/wp-content/plugins/slideshow-gallery-pro/pro/settings-navbuttons.php' (include_path='.;C:\xampp\php\PEAR') in C:\xampp\htdocs\UT-ssw\wordpress\wp-content\plugins\slideshow-gallery-pro\views\admin\metaboxes\settings-styles.php on line 8

I get similar errors on a production server:

Warning: require() [function.require]: Unable to access /export/httpd/data/research/oie/wp-content/plugins/slideshow-gallery-pro/pro/settings-navbuttons.php in /export/httpd/data/research/oie/wp-content/plugins/slideshow-gallery-pro/views/admin/metaboxes/settings-styles.php on line 8

Warning: require(/export/httpd/data/research/oie/wp-content/plugins/slideshow-gallery-pro/pro/settings-navbuttons.php) [function.require]: failed to open stream: No such file or directory in /export/httpd/data/research/oie/wp-content/plugins/slideshow-gallery-pro/views/admin/metaboxes/settings-styles.php on line 8

Fatal error: require() [function.require]: Failed opening required '/export/httpd/data/research/oie/wp-content/plugins/slideshow-gallery-pro/pro/settings-navbuttons.php' (include_path='.:/usr/local/teamweb/php/lib:/usr/local/php-5.2.5/lib/php') in /export/httpd/data/research/oie/wp-content/plugins/slideshow-gallery-pro/views/admin/metaboxes/settings-styles.php on line 8

Thanks for any help!

https://www.ads-software.com/extend/plugins/slideshow-gallery-pro/