[TYPO3] Click Stream Analyzer problem: Cannot Redeclare Day::$search

[Kasper Ligaard Nielsen]

Hi,

I have just installed the latest version of the Click Stream Analyzer on 
a Typo3 4.0 RC2, PHP 5.1.2.

When I click the Admin module in the BE I get the following (I have 
shortened the path with [...]):

Fatal error: Cannot redeclare Day::$search_engine in 
[...]/typo3conf/ext/alternet_csa_out/mod1/f_day.php on line 30

Has anyone a clue what is wrong?

regards, Kasper