Have you tried running the wizard without selecting a page derived from a template or a template to style the pages with? You should be able to run the wizard without using any template or template derived pags, then after the fact you can attach the template. What is happening for you when you attempt to add the template to the page after the fact?
As for the js error you are getting when clicking on the repeat region have you tried deleting your cache file or renaming your configuration folder? If not please try the steps listed here in this link for deleting the cache file:
If deleting the cache file does not fix the problem for you try renaming the config folder to see if this resolves the issue. Please get back to us with the result and the additional details about this.