Calendar Thunderbird-Lightning

[Andreas Aßmann]

Transfer of Calendar-Dates from Thunderbird-Lightning (Windows) to 
Thunderbird-Lightning (Fedora)

Does any know how to copy / transfer calender-dates from 
Thunderbird-Lightning-Windows to Thunderbird-Lightning-Fedora? I tried 
to do it by importing *.ical-files in Lightning-Fedora, but I only got 
the following incomprehensible error-message:

+++++
307 items failed to import. The last error was: [Exception... "Component 
returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) 
[mozIStorageConnection.rollbackTransaction]"  nsresult: "0x8000ffff 
(NS_ERROR_UNEXPECTED)"  location: "JS frame :: 
file:///home/andreas.assmann/.thunderbird/fvnas666.default/extensions/%7Be2fda1a4-762b-4020-b5ad-a41df1933103%7D/components/calStorageCalendar.js 
:: calStorageCalendar.prototype.releaseTransaction :: line 2323"  data: no]
+++++

Thanks for any help!!!

Regards

Andreas