As an update, if I use the reading pane the emails, tasks etc can be viewed.
However as soon as I try to open an item Outlook crashes

"RJCottrell" wrote:

I'm running a trial version of Office 2007. Outlook 2007 is causing me a
problem. I've uninstalled Outlook 2003 and installed Outlook 2007. I can
launch the programme and see all of my emails, contacts and diary
information. As soon as I try to open an item (email, contact or diary
appointment) the programme crashes.
Any help would be appreciated.