ChiliProject is not maintained anymore. Please be advised that there will be no more updates.
We do not recommend that you setup new ChiliProject instances and we urge all existing users to migrate their data to a maintained system, e.g. Redmine. We will provide a migration script later. In the meantime, you can use the instructions by Christian Daehn.
Since Redmine trunk is under active development it is difficult to document how to switch from it to ChiliProject. The best recommendation is to try the instructions from the latest Redmine version above and post on the Forums if you have any questions.