Stumped. Controller function not being executed?

[eluser]meridimus[/eluser]
There are some things you should change for dreamhost support, I gave up though but it was something like adding a question mark on the end.

This was mine but it caused errors somewhere, I can't remember. Give it a go to find out.

Code:

RewriteEngine on
RewriteCond $1 !^(index\.php|lib|user_guide|robots\.txt)
RewriteRule ^(.*)$ /index.php?/$1 [L]