Version 7 App not compiling - Compilation of Java actions failed Google Maps

Hi,

I downloaded version 7 of the Modeller and converted across an App that was working in version 6.10.3

When I tried to run locally it freezes with the error - Compliation of Java actions failed

Reading the error it seems to refer to 'error: package org.json does not exist' for Google Maps.

I have clicked 'Update all Widgets' and re-downloaded the Google Maps module from the App Store, and checked I am on the latest version of Java.

Any thoughts?

Thanks

Ian