When developing on my system I like to use only one version of the core files. If I update the core files from svn it gets updated for all apps I'm working on.
The way I'm using this is explained below:
If you use a setup like I explained in my previous post calling the bake script involves a lot of typing with the core and app parameter paths.
If I want to call the bake script from the /Users/mwesten/Sites/dev/myapp cake app folder, it has to be done like this: