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Unable to open acsm files in ADE (e-books I have recently bought and borrowed, too). I get the message "Error! Check activation." The ADE programme is authorized on both PCs in use. Any idea?
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Try de-authorizing and then re-authorize the computer.
Please make sure that you remember the user-id/password correctly.
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Thank you! It worked on both PCs. I managed to open the e-books ...