When you create a new project and immediately add Groovy support, you cannot Assemble without getting the error message:
groovy.lang.MissingPropertyException: Could not get unknown property 'guiModule' for root project 'polymer-remove' of type org.gradle.api.Project.
The repro is create a new project then immediately enable Groovy support then try and assemble.
The workaround is to create the project and before you enable Groovy support, assemble the project at least once.
Thanks,
Ian
