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I have serious problem. I don't have hard copies of my books and my vitalsource bookshelf stopped working. When I open my program I get "an error occurred while reading preference file. Some preference could not be recovered. you may be prompted for your license code again when you try to update your license." I posted on vitalsource support forum, but nobody responded. I need to get to my text promptly. If anyone knows how to solve this issue, please help me. Did someone experience similar issue with this stupid program?

You could also try emailing someone from vitalsource for a (potentially) faster response

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PS I once posted on vital source support during L1, they got back to me when I was studying for L2

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