Email plugin throwing <NoMethodError>: undefined method 'each'. It appears the eventFieldsValue is not an array when it is iterated to validate its values. I experience the issue in v1.1.12 and v1.1.13. Looks like the code in question was last altered in commit: 8d644ba2817dfaa30d67cce1402fa8aa0718b132
I worked around the issue by pulling v1.1.13 and manually replacing the email.rb with the latest from master then building.