Google Play Music and Chrome Settings: Oops we have a technical issue

Having a go with Google Music, but I was getting the error

Oops we have a technical issue

please refresh this page in your browser to go back to listening to your music. If issues persist, make sure that you have Flash enabled and working.

I use a Flash blocker so make sure you you've white listed play.google.com

and then if you use 'Click to Play' for plugin control, white list play.google.com there as well:

1. In Chrome go to 'Settings'
2. Scroll down to the bottom and click "Show advanced settings..."
3. Then click 'Content Settings'
4. Scroll to 'Plug-ins'
5. If 'Click to play' is selected, click 'Manage exceptions'
   
   
6. and add play.google.com

Reload play.google.com/music and you should be good to go