Unity IAPs - ConfigurationBuilder.Instance problem

Hello!
Unity IAPs test purchases works fine at the editor, but on OSX
var builder = ConfigurationBuilder.Instance(module);
crashes.
I’am using sandbox test account for testing
Unity version - 5.3.4p1

Any help would be greatly appreciated.

Make a new post in Unity services section of forum as really it be nice to have seperate Unity InApp discussion section but they like bloating features with other features