How do I retrieve a uri segment in a hook?

[eluser]Jelmer[/eluser]
Are you showing all errors? (like I posted in post #4) Because if "Fatal errors" are shown but load_class('URI') gives you a white screen that means that load_class('URI') gives you a lesser error then load_class('uri'). But without knowing what error it's still giving, it's impossible to tell what's wrong.

EDIT: For example, if you have defined CURRENT_LANGUAGE already somewhere else and forgot to remove that - the second define( 'CURRENT_LANGUAGE', $lang) would throw a parse error which is not shown when error reporting is set to E_ERROR. So set your error reporting to E_ALL to find out what's going on, don't take a white screen for a worse error then a "fatal error" because it isn't. It's just not showing the lesser errors, even though it does crash on them.