When extending farcry.core.packages.farcry.tree in your project (packages/system folder) you get an error:

"coldfusion.runtime.UndefinedElementException: Element PACKAGEPATH is undefined in a CFML structure referenced as part of an expression."

Looks like you have to add the cfinclude which is in the original tree.cfc (<cfinclude template="/farcry/core/webtop/includes/cfFunctionWrappers.cfm">).

The problem with this is that after the application starts you can't reference your overridden tree.cfc as you get the following error:

"The routine queryofquery has been declared twice in different templates."