Testing out CAPTIVATE CLASSIC IMPORT (BETA) and screen freezing at very first step

I updated to All New Captivate 13.1.1 today and want to try out the CAPTIVATE CLASSIC IMPORT (BETA) feature but I can’t get beyond the initial splash screen which just sits saying IMPORTING YOUR PROJECT - the thing is I haven’t even told it which project I want importing yet - is this a known issue?   Thank you in advance.