BUGFIX Check if SimplePie exists before attempting to create a new instance of it, since it's a 3rd party class

code/RSSWidget.php

@@ -44,6 +44,8 @@ class RSSWidget extends Widget {
 	
 	function FeedItems() {
 		$output = new DataObjectSet();
+		
+		if(class_exists('SimplePie')) {
 			$this->feed = new SimplePie($this->AbsoluteRssUrl);
 			$this->feed->init();
 			if($items = $this->feed->get_items(0, $this->NumberToShow)) {
@@ -57,5 +59,6 @@ class RSSWidget extends Widget {
 			}
 		}
 	}
+}
 
 ?>