Unity IAP fails to compile on Mac and 2019

Hi,
Does anyone have any pointers on how to get IAP working with Unity 2019. I have done the import and it just gives me a heap of stores.dll errors on compile. I had IAP working on 2018 for this project but the features of 2019 were compelling for the upgrade.
I have read some of the posts about spaces in installation paths however that seemed to be Windows specific and I am on Mac. I have also tried removing all my Purchaser code and references before the import, but to no avail. I am trying to deploy on iOS and Android only.
For what it is worth I have attached a screenshot of the compilation errors.
Cheers
Adrian

 

We are having issues with IAP on 2019 https://forum.unity.com/threads/notice-iap-issues-with-unity-2019.689647/