Button linking to another Unbounce page not working


I’m previewing some new pages and the button link from one page to another isn’t working. Both pages are in Unbounce, both are published, and I’ve double-checked the URLs. When I click the button, nothing happens - I just stay on the first page.

My pages are:
go.mastermine.net/dig and go.mastermine.net/dig-2013-09-25

This also happens on
go.mastermine.net/relief and go.mastermine.net/relief-2013-09-25


One more thing - the button in question is only in Variant D of each beginning page.