what java installation are you using, ie. what java -version is returning for you ? Are you running AEm with user that has proper permission to the directory where it is unpacked?

I will share some of my experiences with groovy console. We are using groovy console mostly for tasks, which can be automated. For example you want to migrate one component into another, you want to perform some content clean ups, you want to regenerate renditions for specific assets, when they don'...