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I followed the instructions for "Moving Thunderbird Data to a New Computer," but the calendar data did not transfer & the calendar program is not functioning.

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I manually moved my profile from Thunderbird in Ubuntu 12.04 LTS to Windows 8.1. I followed instructions and everything moved as expected except the Calendar. Not only did the Calendar data not transfer, the Calendar itself is not functioning, e.g. no dates & days of week, etc., all menus relating to Calendar are "greyed-out," etc. I would appreciate any help. TIA KellyJMorris

I manually moved my profile from Thunderbird in Ubuntu 12.04 LTS to Windows 8.1. I followed instructions and everything moved as expected except the Calendar. Not only did the Calendar data not transfer, the Calendar itself is not functioning, e.g. no dates & days of week, etc., all menus relating to Calendar are "greyed-out," etc. I would appreciate any help. TIA KellyJMorris

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The Calendar (a.k.a. Lightning) contains binary components, which are OS dependent. So you do need to remove the Lightning add-on in your Add-on manager and install the Windows version of Lightning. https://addons.mozilla.org/en-US/thunderbird/addon/lightning/

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Chosen Solution

The Calendar (a.k.a. Lightning) contains binary components, which are OS dependent. So you do need to remove the Lightning add-on in your Add-on manager and install the Windows version of Lightning. https://addons.mozilla.org/en-US/thunderbird/addon/lightning/

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This worked fine. Many thanks! KJM