Hey,
I tried to import a freshly downloaded EasyAR for Unity 2.2.0 from web and imported it to Unity2018.1.6f1. And it crashed.
Then I instead imported it on Unity2017.4.6f1(RTS) and it works just fine.
And then I updated the 2017 project to 2018.1.6f1, and now it works.
Are there anyone experiencing the same issue? Or, maybe its the Unity bug on importing an asset?