I also get this message in some of my websites when I click on the plugins tab
The plugin buddypress/bp-loader.php has been deactivated due to an error: Plugin file does not exist.
The plugin bulletproof-security/bulletproof-security.php has been deactivated due to an error: The plugin does not have a valid header.
This update of wordpress 3.4 has wrecked every last website I have
currently they are set to 755
thanks for the response. what do I need to set them to?