A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
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Uninstalling cocoapods on my mac to 1.10.2 resolved the issue. I am wondering if there is a compatibility matrix for Unity and Cocoapods...
@ChuanXin @EduFoqsi Thank you - it is working now after I install the Tile Map editor from the path provided by @EduFoqsi