Recently, while tinkering with plugins, I once disabled all the plugins on my North Street blog. When I restarted them, all the previous plugins started up normally except for Popularity Contest, which encountered an error. Along with some updates in WordPress 2.5, issues may also arise with the Popularity Contest plugin for WordPress. Some people might see messages like "This plugin does not exist" or "This plugin will cause a fatal error and cannot be enabled" when trying to activate it in the admin panel.