Clearing theme cache I added new code to the template.php and tried clearing the cache but it does not seem like the cache is being cleared. I tried the Admin ->settings->performance and drush (not sure if I installed it properly). Would there be any suggestions?

Drupal 6.
What's the new code that you've added to the template.php file? When I run into problems like this, in the 95% of cases I make a mistake and the cache clearing works, but my new code won't be recognized because of errors.

Basically, if you're able to run

drush cc all


without any warnings or errors, the cache clearing succeed and it should tell you that

'all' cache was cleared [success]