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

Ok after half day of debugging and decompiling i found out the problem was the (internal) class Sitecore.Configuration.ConfigPatcher, it seems to choke with Sitecore.WebDav.[Debug/Release].config files that are used for xdt transformations of the Sitecore.WebDav.config file for the content delivery and content authoring environment.

For now, the workaround is rename these files (and disable xdt transformations)

However, this problem should affect any user of xdt transformations for non-web.config files (i'm using slow cheetah add-in)