Test a Template

Hi all,

I adjusted a Studio Web Projekt Template for internal and external (by Customers) use. As a Map and all related Workflow/Layout Template I used our internal references saved in our Portal. But when I tryed to use it by a Customer the json file that I downloaded gave me errors and I can't even open it to replace the Map or other components.

Has anyone Ideas how I can do it and test it? I naturally haven't alway access to the Customers Environment, so I don't know how to avoid mistakes. 

Thanks for hepling!
Donatella