Running Clojure on Heroku and getting Error H14 (No Web Process running)

I've followed this gist, this blog post and downloaded and deployed this exa开发者_高级运维mple and in all 3 cases I get:

Error H14 (No web processes running) -> GET etc-etc-999.herokuapp.com 

Is there any usual clojure + heroku gotcha's that I might be falling foul of?

Things I've tried/checked:

• I've tried running my app locally and it works,
• I've made sure my local and remote copies are in sync,
• I've tried seting the heroku config PORT=8080 and tried un-setting it
• I've tried restarting the apps
• I've got a working Procfile
• I've checked that I have 1 web process up and running.
• and have made sure I'm set up to use the cedar stack.

---

Ok I finally found the problem...

GET "/"

Works fine locally and is exactly how the above git project does it...

But I had to change this to:

GET "/*"

To get it to work on Heroku.