I get "document conversion failure" message when opening any attachments. BBAttachment Service is showing in applications. Was told at Verizon store (via BB tech support) this may be corrupt...to delete it and then, via Desktop Manager, reload. However, when I go look oni DM, do not see the AS app. Is this why I cannot open up attachemtns? What do I do? How do I download either to the phone or to the DM Application Loader?