So today I needed to do another search, and I got the same message. Found a login prompt and logged in, and was told they thought I owned Quicken 2001 for the Mac, and was that right? I first changed my email from an old Mediaone account (dead several years, at least), then re-registered. Tried logging in again, and the Mediaoone address was still there. Tried browsing around some, got bounced to the Intuit site (Not The Same), and there had to pick between the new email address I'd given them and a different old one--Intuit only wants you to have one. Quicken's Web site doesn't seem to care...or perhaps can't tell.
Golly gee, all this and I still haven't gotten an answer to my question...but at least the search function is working again.