https://legacy.forums.gravityhelp.com/topic/another-fatal-error-activating-plugin Gravity Support Forums Topic: Another Fatal Error Activating Plugin en-US Sun, 19 Apr 2026 19:56:30 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/another-fatal-error-activating-plugin#post-14187 Fri, 10 Dec 2010 15:20:06 +0000 Carl Hancock 14187@https://legacy.forums.gravityhelp.com/ <p>Yes, as illinoisharley said it appears you are running an old version of WordPress that does not support Widgets as the WP_Widget class is a core class. You need to upgrade the version of WordPress you are running and you should ALWAYS run the latest version of WordPress for security reasons if nothing else. </p> https://legacy.forums.gravityhelp.com/topic/another-fatal-error-activating-plugin#post-14166 Fri, 10 Dec 2010 02:19:14 +0000 Chris Hajer 14166@https://legacy.forums.gravityhelp.com/ <p>Your WordPress version (2.7.1) is old and does not support widgets, which is why the widget class is not found. You need to upgrade WordPress and then this error will disappear. </p> https://legacy.forums.gravityhelp.com/topic/another-fatal-error-activating-plugin#post-14165 Fri, 10 Dec 2010 00:36:10 +0000 pelgen 14165@https://legacy.forums.gravityhelp.com/ <p>I am trying to install the gravity form on <a href="http://www.redchip.com.au" rel="nofollow">http://www.redchip.com.au</a> and When I go to activate it I get the following error:</p> <p>Fatal error: Class 'WP_Widget' not found in /usr/home/redchip/html/wp-content/plugins/gravityforms/widget.php on line 12</p> <p>Which I have not seen anywhere else. The host is running php 5.</p> <p>Any ideas why this might be happening?</p> <p>ed </p>