Thanks Marc, I installed Firefox and managed to log in OK, so there must be something in Chrome cache that's causing the problem.
I appreciate the difference between supporting test and live sites. But for people like us, with established forums on other platforms it's crucial that we are able to perform test runs before migrating a live site.
My other question was your documentation points towards converting another platform's data and that this data needs to be on the same server.
Currently I have taken on another server with a different host and would like to test import the data away from the live site. Is this possible?