Bart, Thanks much for your insight.
Given that the OpenACS 4.6.3 stable requires pg 7.2.3[1], shouldn't a version of ecommerce be made available that works without modification?
I can grab another copy from CVS to start fresh, then make changes that get the code working with 4.6.3 and share it (back to CVS?), before modifying it for implementation purposes.
Also, yes, I see how ec could benefit from using ticket tracker, templating, news, and the openacs object abstractions. To this end, I am focusing on ecommerce for this stage of learning openacs by developing.
1. https://openacs.org/doc/openacs-4-6-3/individual-programs.html