problems importing messages from outlook express to windows live mail

I have read and, I think, followed the instructions on how to export messages from OE and import them to WLmail. I do not get any error messages during the import and WLMail says that the import was successful. After I complete the installation, I can see a new folder (Imported Folder) under under Storage Files but when I click on it, it says there are no items in this view. Properties shows 0 messsages.  

Any suggestions as to what's gone wrong would be appreciated.  I'm switching computers from one with XP to one with Vista.  I didn't have any problem importing my contacts.