I\'m convinced that I\'m just having a bad day and missing something obvious. I\'m trying to create a new Grails project in IntelliJ IDEA 9.0 and I am unable to associate i
They Changed the way that this is done in Intellij 9.0. You are going to want to right-click on the Module and click "Add Framework Support"
This will bring up a dialog where you can select a new Groovy SDK. Choose your Grails Location and hit OK.
http://www.jetbrains.com/idea/webhelp/adding-frameworks-support.html
http://www.jetbrains.com/idea/webhelp/frameworks-support.html
Unfortunately, it isn't quite a simple as that. It appears your GROOVY_HOME needs to point to the version of Groovy you actually wish to use, and when defining the Global Groovy library, you need to make sure you add the individual jar files, not the whole jar directory (otherwise IDEA doesn't recognize its a Groovy install).