Visual Ruby Errors

I've got everything installed but when trying to visual edit (right click and Edit) I get this error. 
I am running Mac OSX 10.13.6
I have tried what is recommended, but I am not winning. Any assistance would be appreciated. Thanks

<img width="514" alt="vr error" src="https://user-images.githubusercontent.com/42124928/43786482-006b2cde-9a69-11e8-9f19-43f653fddefb.png">
