Routing question and error

[eluser]god_module[/eluser]
I'm trying to route an URL like this

http://www.example.com/Tennis

to

http://www.example.com/search/filter/Tennis/AND/0/0

using the following routing rules:

Code:

$route['(:any)'] = 'search/filter/$1/AND/0/0';

This is not working. I get an error:

Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to allocate 47 bytes) in project\system\database\drivers\mysql\mysql_result.php on line 162

Does anyone have an idea?

Thanks,
Greg