I was having several issues with all the pages at npx.com with Google Chrome, it was suggested I start the browser in incognito mode. This eliminated the issues, working through the extension I discovered AdBlock Plus was causing the problem. I had whitelisted npx.com but AdBlock Plus was still stopping pop-ups. Whitelisting www.npx.com stopped AdBlock Plus from working, I have suggested to AdBlock to change the wording from domain to subdomain on all their menus or to actually use a domain as in *.domainname.extension.
