Have you tried deleting the cache file or renaming the config to see if it helps to resolve this issue? If not please give this a try, here is a link to a page that lists the steps for clearing the cache file as well as renaming the config:
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If you have tried these things and they do not work let me know so I can check this out more. Also, if you continue to have problems please also post some screen shots of what you are experiencing.