I'm having some problem with e-mails in Office Outlook 2007. All e-mails with a content-type of multipart/related or multipart/alternative won't display in the preview pane and when I double click on the mail it throws an error "Can't open this item. Unknown error!".
I already tried to login with a new profile but it didn't change anything.
I think something went wrong in the registry but I don't know where to look.
Also the preview pane in Windows Search 4.0 isn't working the way it used to. If I search for pdf-documents the results don't open in the preview pane but they open in the Adobe software itself. I think it's related to the outlook problem.
Please let me know if you know a solution.