[TYPO3] TYPO3 Calendar

[tapio]

>>and in the FE: Warning: mysql_fetch_assoc(): supplied argument is not a
>>valid MySQL result resource in
>>/opt/lampp/typo3_src-3.8.1/t3lib/class.t3lib_db.php on line 741

I got the same error, which disappered after deinstallation.
In general I have got these kinds of error messages, when the database
doesn't match with installed extensions. The must be some mismatch with
informed database fields and found fields.