Trying to get back to codex on 2.64 :-(

I spent most of yesterday trying to get codex running on 3.0, and i
think i got pretty close.. i finally gave up and went back to
2.6.4... but NOW, I'm getting the following error:

Bean creation exception during factory-method call (trying to call
getTransferConfig on
coldbox.system.extras.transfer.TransferConfigFactory)
Element 0 is undefined in a CFML structure referenced as part of an
expression.:

The error occurred in C:\htdocs\coldspring\beans
\DefaultXmlBeanFactory.cfc: line 774
Called from C:\htdocs\coldspring\beans\DefaultXmlBeanFactory.cfc: line
568
Called from C:\htdocs\coldspring\beans\DefaultXmlBeanFactory.cfc: line
617
Called from C:\htdocs\coldspring\beans\DefaultXmlBeanFactory.cfc: line
216
Called from C:\htdocs\coldspring\beans\DefaultXmlBeanFactory.cfc: line
201
Called from C:\htdocs\coldspring\beans\DefaultXmlBeanFactory.cfc: line
190
Called from C:\htdocs\coldbox\system\plugins\ioc.cfc: line 247
Called from C:\htdocs\coldbox\system\plugins\ioc.cfc: line 75
Called from C:\htdocs\coldbox\system\services\LoaderService.cfc: line
129
Called from C:\htdocs\coldbox\system\services\LoaderService.cfc: line
111
Called from C:\htdocs\coldbox\system\services\LoaderService.cfc: line
37
Called from C:\htdocs\coldbox\system\coldbox.cfc: line 56
Called from C:\htdocs\codex\Application.cfc: line 45