Publishing Public Folder Calendars Exchange 2013

Hi Guys 

I'm trying to publish an exchange 2013 public folder calendar. from outlook when I go to publish it give me the following error: 

The mailbox folder identity ":S4ABAQH/////LgAAAAAAAAAoEFwKAAAAAPUAAAAAAAAAVhBcCgAAAAAAAAAAGkRzkKpmEc2byACqAC/EWgMAvY9C6z7Df0uoy78J0eSm+gAARbBnPwAAAAAAADihuxAF5RAaobsIACsqVsIAAEVNU01EQi5ETEwAAAAAAAAAAByDAhCqZhHNm8gAqgAvxFoGAAAAOTkzMDU4ZGMtOGY5Yy00Yzc5LThkZGQtMTE5NzEyNTgwMDA3QGtpbmdzY2h1cmNoLm5ldC5hdQAvbz1raW5nc2NodXJjaC9vdT1FeGNoYW5nZSBBZG1pbmlzdHJhdGl2ZSBHcm91cCAoRllESUJPSEYyM1NQRExUKS9jbj1SZWNpcGllbnRzL2NuPWUwMzkxYTQ3MmI0ODQxZDg4NDE4MzI5MjQ1MmUxNGY3LUR5bGFuIE1jTGVvZAAC" isn't in the correct format. The correct format should look like this: "<MailboxIdentity>:<FolderPath>".

I've been searching but am unable to find any information regarding the error.

Is there something that i'm missing which would allow me to publish the calendar?

Regards

Dylan