Version 5.0.0 beta 5

applications/gallery/sources/Category/Category.php

@@ -775,7 +775,10 @@ class Category extends Model implements Permissions
 
 		if( $lastImage = $this->lastImage() )
 		{
-			return (string) File::get( 'gallery_Images', $lastImage->$property )->url;
+			if( $lastImage->$property )
+			{
+				return (string) File::get( 'gallery_Images', $lastImage->$property )->url;
+			}
 		}
 
 		return NULL;