I installed 3.0 on two different computers running Vista. Both computers previously had both ADE and 2.5 installed before the upgrade. After the upgrade I had decent results but within 24 hours I started to get a "this machine not authorised" message on 3.0 even though ADE continues to work fine. I tried a variety of solutions including uninstall and reinstall. All of this to no avail. I'm back on 2.5 and both computers work fine.
It seems like there might be a compatability problem with ADE since 3.0 now tries to grab the books that would previously be opened by ADE. Even when 3.0 didn't work on borrowed books, by right clicking the download file and choosing to open with ADE, the file worked fine.
Obviously a Gremlin is running inside my computers.
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