Hi,
We have staging online CRM upgraded to 2015 already, however, the prod CRM still stays in version 2013 during this transition time. We developed some functions in staging CRM, such as new attributes, web resources, workflows, etc, and packaged
them into a solution. When we imported the solution to production(2013), we had the error saying '...invalid XML in package...'. Is there any way to fix it? Thanks.