Parse error: syntax error in WordPress [duplicate]-Collection of common programming errors

Parse error: syntax error, unexpected T_IF in /home3/mathiasf/public_html/wp-content/themes/smartstart/functions/plugin-activation.php on line 991

this is what i found in line 991

if ( ! class_exists( 'WP_List_Table' ) ) {

How can I solve this error?

Here is the full code: http://pastebin.com/UB0EWK2A