[Plugin: Dagon Design Sitemap Generator] Constant Error Message for 3.13 & 3.14

Receive following error message even after repeatedly deleting either 3.13 or 3.14 from my server and repeatedly uploading and reactivating the plugin.

Warning: include(/home/charlesa/public_html/wp-content/plugins/sitemap-generator/lang/English.php) [function.include]: failed to open stream: No such file or directory in /home/charlesa/public_html/wp-content/plugins/Sitemap-Generator/sitemap-generator.php on line 48

Warning: include() [function.include]: Failed opening ‘/home/charlesa/public_html/wp-content/plugins/sitemap-generator/lang/English.php’ for inclusion (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/charlesa/public_html/wp-content/plugins/Sitemap-Generator/sitemap-generator.php on line 48

http://wordpress.org/extend/plugins/sitemap-generator/