Errors after update

I updated WP Fastest Cache Version 0.8.4.8 and got errors on the top of each admin page and some site’s pages (see below)
I also have WP Fastest Cache Premium Version 1.1 (there is no option to update)..
Thanks!

Warning: include_once(WPFC_WP_PLUGIN_DIR/wp-fastest-cache-premium/pro/library/mobile-cache.php) [function.include-once]: failed to open stream: No such file or directory in /home/MYSITE.COM/wp-content/plugins/wp-fastest-cache/wpFastestCache.php on line 148

Warning: include_once() [function.include]: Failed opening 'WPFC_WP_PLUGIN_DIR/wp-fastest-cache-premium/pro/library/mobile-cache.php' for inclusion (include_path='.:/usr/local/lib/php:/usr/local/php5/lib/pear') in /home/MYSITE.COM/wp-content/plugins/wp-fastest-cache/wpFastestCache.php on line 148

Warning: include_once(WPFC_WP_PLUGIN_DIR/wp-fastest-cache-premium/pro/library/powerful-html.php) [function.include-once]: failed to open stream: No such file or directory in /home/MYSITE.COM/wp-content/plugins/wp-fastest-cache/wpFastestCache.php on line 152

Warning: include_once() [function.include]: Failed opening 'WPFC_WP_PLUGIN_DIR/wp-fastest-cache-premium/pro/library/powerful-html.php' for inclusion (include_path='.:/usr/local/lib/php:/usr/local/php5/lib/pear') in /home/MYSITE.COM/wp-content/plugins/wp-fastest-cache/wpFastestCache.php on line 152

Warning: include_once(WPFC_WP_PLUGIN_DIR/wp-fastest-cache-premium/pro/library/image.php) [function.include-once]: failed to open stream: No such file or directory in /home/MYSITE.COM/wp-content/plugins/wp-fastest-cache/wpFastestCache.php on line 166

Warning: include_once() [function.include]: Failed opening 'WPFC_WP_PLUGIN_DIR/wp-fastest-cache-premium/pro/library/image.php' for inclusion (include_path='.:/usr/local/lib/php:/usr/local/php5/lib/pear') in /home/MYSITE.COM/wp-content/plugins/wp-fastest-cache/wpFastestCache.php on line 166

Warning: include_once(WPFC_WP_PLUGIN_DIR/wp-fastest-cache-premium/pro/library/logs.php) [function.include-once]: failed to open stream: No such file or directory in /home/MYSITE.COM/wp-content/plugins/wp-fastest-cache/wpFastestCache.php on line 170

Warning: include_once() [function.include]: Failed opening 'WPFC_WP_PLUGIN_DIR/wp-fastest-cache-premium/pro/library/logs.php' for inclusion (include_path='.:/usr/local/lib/php:/usr/local/php5/lib/pear') in /home/MYSITE.COM/wp-content/plugins/wp-fastest-cache/wpFastestCache.php on line 170

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