Hello, I've seen many threads of people not being able to download things from the Play Store with the error referenced in the title. My problem is I can download anything I want from the play store, but I can't do in-app purchases without receiving the above error. I'm using a DROID MAXX on Wi-Fi only (Not currently connected to a carrier). Any suggestions? I've tried removing my account and re-adding it. I just recently performed a factory reset as well. I've cleared all of the data and cache data for Google Play Service and the framework. I'm out of ideas.