When I try to register a new user (I admin for our company) I go through the process and on the 'success' URL I only get a blank page. Registration appears to actually have failed (the blank success page is a symptom, not the actual problem, it seems) because user cannot login and I can try re-registering several times with the same details and do not get an error for an already existing user or address.

Tried on different computers, fresh Chrome profile, etc.