Login trouble

Hello, I can’t seem to be able to log in. The form simply refreshes. I enabled debugging in the config file, here are the errors I got.

Notice: Undefined index: posttype_enable_movies in /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/widgets.php on line 12

Notice: Undefined index: posttype_enable_music in /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/widgets.php on line 13

Notice: Undefined index: posttype_enable_books in /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/widgets.php on line 15

Notice: Undefined index: posttype_enable_movies in /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/post-types.php on line 12

Notice: Undefined index: posttype_enable_music in /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/post-types.php on line 13

Notice: Undefined index: posttype_enable_books in /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/post-types.php on line 15

Notice: Undefined index: posttype_enable_movies in /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/widgets.php on line 252

Notice: Undefined index: posttype_enable_music in /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/widgets.php on line 253

Notice: Undefined index: posttype_enable_books in /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/widgets.php on line 255

Notice: Use of undefined constant ENABLE_CACHE - assumed 'ENABLE_CACHE' in /home/mohammed/public_html/maxvideogaming.com/wp-config.php on line 104

Notice: Constant TEMPLATEPATH already defined in /home/mohammed/public_html/maxvideogaming.com/wp-config.php on line 108

Notice: Constant ADMIN_COOKIE_PATH already defined in /home/mohammed/public_html/maxvideogaming.com/wp-config.php on line 111

Warning: Cannot modify header information - headers already sent by (output started at /home/mohammed/public_html/maxvideogaming.com/wp-content/themes/mvg/functions/widgets.php:12) in /home/mohammed/public_html/maxvideogaming.com/wp-includes/pluggable.php on line 866

Please help, thanks.