Does anyone know if when using this mod, the term in admin>customers details which says:
Require the Referral Source in account creation
simply means that the Referral souce field is required to be displayed, or that the referral source selection is required for the user to complete account creation?

The (inherited) site I'm working on has this mod incorporated, and before I upgraded it to 1.3.6, it was the latter; it no longer is but I'm not sure whether I've overwritten something or whether I've failed to transfer a file from the earlier version; re-installing the module itself hasn't solved the problem.