If you use the trunk version of CakePHP you probably have seen that the structure has changed. There are now two branches available:
- 1.x.x.x contains the current stable version
- 2.x.x.x contains the code for the next version
This change means you have to adapt your local configuration. In my case I have to modify the constant CAKE_CORE_INCLUDE_PATH in app/webroot/index.php.