Rescue exception when parsing invalid yaml. Prevents silent fail in auto and server mode

lib/jekyll/convertible.rb

@@ -26,7 +26,11 @@ module Jekyll
       if self.content =~ /^(---\s*\n.*?\n?)^(---\s*$\n?)/m
         self.content = self.content[($1.size + $2.size)..-1]
 
-        self.data = YAML.load($1)
+        begin
+          self.data = YAML.load($1)
+        rescue => e
+          puts "YAML Exception: #{e.message}"
+        end
       end
 
       self.data ||= {}