Just wanted to bring to you attention.  I have done a few searches this (early) morn in the site search at DnnCreative.com and occationally get this

A critical error has occurred.
Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.

Hello,

Thanks for the information, that's useful to know.  I am going to be replacing the default search engine shortly as it can't actually index the entire site (I think it has only indexed up to issue 9 or so).

Thanks,