I've only just gotten around to playing with this MOD and on browsing to the install/index.php file I get the same error Bombadil posted above, but without the backtrace notes.
SQL ERROR [ mysqli ]
Table 'forum.phpbb_trolls' doesn't exist 
An SQL error occurred while fetching this page. Please contact the Board Administrator if this problem persists.
This is on a local copy of my board running under xampp. (php 5.2.5) As there's no SQL query included in the install I expect the table is meant to be created by your installation script, but somehow it seems to have failed. I'm also not proficient enough in php to be able to decipher the query from the code. Edit:
Found the install/schemas directory and created the table manually. My problem now is that I can't figure how to add a user to the troll ist.