Fatal Error on Activation

I just downloaded version 2.3 of the Global Author Posts Feed plugin, and am getting the following FATAL ERROR when trying to activate it:

Warning: require_once(../wp-load.php) [function.require-once]: failed to open stream: No such file or directory in /home/storage/b/50/fc/ogpremium/public_html/wp-content/plugins/recent-global-author-posts-feed/recent-global-author-posts-feed.php on line 30

I have post indexer properly installed.

Please help... Thanks!