Ok, I updated XAP yesterday as XStudio said the newer version was needed when I clicked the play button.
It downloaded XAP-Beta-15.29-v0.4.4.dmg which I then ran. It went throguh the install process no problem but now whenever I try run my Android Shared project I get the message "Xamarin Android Player already running" inside XStudio.
How can I fix thisp leasE?
I've tried restarting.
Deleted XAP from application folder and then reinstalled and updated.
Lost an entire day yesterday as I have not found a solution to this.