Hi all,

Sorry to post on a Saturday!!!

I used the package DocTypes Extension Package from http://our.umbraco.org/projects/developer-tools/doc-type-extensions/bugs,-feedback-and-suggestions. I switched the Master Document Type of one Document Type to another. The process didnt need to delete any properties and the process seemed to work no problems, however now the content nodes do not appear within umbraco's Tree View. Oddly, the pages do still appear on the website.

If I log through umbraco's log's I see the following error associated with one of the nodes tyhat is now missing:

Error generating preview xml: System.ArgumentException: No Document exists with Version '00000000-0000-0000-0000-000000000000' at umbraco.cms.businesslogic.web.Document.setupNode() at umbraco.cms.businesslogic.web.Document..ctor(Int32 id) at umbraco.cms.businesslogic.web.Document.RegeneratePreviews()

I've tried all the usual "Replublishing entire site" etc, with no joy.

Any ideas anyone?

Many thanks

Al