Thanks.

I uninstalled the package, and did the following to get back to normal:

added the following to the errors node in umbracoSettings.config (same ID as was used before patch):

<error404>3927</error404>

404handlers.config contain the default content shown here:

http://our.umbraco.org/wiki/reference/files-and-folders/files-in-the-config-folder/404handlersconfig

Changed web.config to include the following:

<customErrors mode="On" />

But umbraco is showing the following on the 404 page:

No umbraco document matches the url 'http://ava.co.uk/error404.aspx?404;http://ava.co.uk:80/sajkdh'

Any ideas why?

Max.