I am using WP 2.8.4. After upgrading to Wassup 1.7.2, and attempting to activate, I get a fatal error. This makes the Plugins page blank, and the only way to get it back is to go to the server and delete the wassup directory. I then uploaded a clean copy (instead of overwriting the old), and attempted to activate - got the same probfatal error.
Text of Fatal Error: Fatal error: Cannot redeclare wassup_install() (previously declared in /mnt/Target01/338679/www.munged.com/web/content/wp-content/plugins/wassup/wassup.php:59) in /mnt/Target01/338679/www.munged.com/web/content/wp-content/plugins/wassup/wassup.php on line 194