Upgrading Umbraco from 3 to 4 – Not all smooth sailing

If you have ever had to setup or manage an Umbraco installation you will know both the pleasure and the occasional pain that it can bring. Umbraco is part of the growing list of “oober cool” up and coming Dot Net CMS that are getting attention in the “get it up quick” world of marketing driven sites in the market place (Ford Australia for example). I recently had to upgrade a clients installation from 3.0.5 to 4.0.2.1 and the story that follows will hopefully help someone in a similar position so that they can revel in the same relief that I do currently.