New API fails at final "Generating proxy..." step

[#1]

When creating a new API, the multi-step process freezes at the final summary step stating: "Generating proxy..." The proxy is never created.

From API Management, under the APIs » API Proxies, I press the "+ API Proxy" button to create a new proxy.

• Under "Build a Proxy" type, I select "Node.js App".
• I enter a Proxy Name, Proxy Base Path, leave the source at a Hello World Sample, and enter a Description; then, press Next.
• Under Security, I select "Pass through (none)", and "Add CORS headers"
• Under Virtual Hosts, I select our default and secure virtual host groups.
• On the "Build Tab", I select "test" enviroment.

Finally, when I press "Build and Deploy", the final Summary step locks on "Generating proxy..." with a gray checkmark. That checkmark never turns green, nor can does the page refresh, nor is the proxy created.

After creating 26 proxies, this would be the 27th API proxy to be created; so, presumably this is an error within Apigee? Any other reports of this?