tracking NullReferenceExceptions in sitecore

Question

i\'m trying to track a NullReferenceException that shows up on sitecore 6.5 at loading any webpage:

[NullReferenceException: Object reference not set to an i         


        

Answer 1

I had something similar when adding xml comments between nodes:

Did not work:

If you add the comment before the root node, it works.