From a prompt to do so, I did an update of Thunderbird.
Now, it's not working properly and here is an error message I get;

[Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [mozIStorageConnection.rollbackTransaction]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: file:///C:/Documents%20and%20Settings/john/Application%20Data/Thunderbird/Profiles/4ekn4iza.default/extensions/%7Be2fda1a4-762b-4020-b5ad-a41df1933103%7D/js/calStorageCalendar.js :: anonymous :: line 1206" data: no]

Is there anyone that could please tell me what I should do with this?