I’m having problems completing the tutorial on this page

https://docs.skuid.com/latest/en/skuid-platform/data-source-tutorial.html

1. Only sometimes - very infrequently - is the External Object Name drop-down populated
2. Page Preview produces a blank page
3. The page doesn’t save the model or the table

I have tried the tutorial in both Internet Explorer 11 and latest Chrome (it’s worse behavior in Chrome)

Any ideas what the problem is?

Cheers,

Mark