George,
> about the below, how does one enable reading of the
> include/customer/class.example.php file? Currently I
> have a fresh Eventum 1.4 installation and zero
> customers showing up, and therefore a bit of a
> catch-22 when trying to creating my first issue.
>
You need to go into Administration -> Projects, and edit the project that you
want customers to be displayed on. There will be a "Customer Integration
Backend" field on that form that you can use to choose the backend for the
customer integration. The list is automatically populated from the files
available on /path-to-eventum/include/customer/.
If you need more help on this, please let me know.
--Joao