Same problem
Support gave advice to 1: clear cache, 2: Delete Configuration Files, 3: New version of a javascript file to install. Each support stage takes a few days turnaround so a week in total. Now the wizard completes but a big heap of other bugs are exposed.
I cant believe Webassist describe this product as "easy to use, no coding required". The current version is far from robust in my opinion and support is poor.
My ticket number, because I can hear the Moderator typing the standard advice, is 81644