I am getting a MissingPropertyException when running inside of Eclipse, but not when I run outside. What gives?
A. You could be hitting this issue: http://jira.codehaus.org/browse/GRECLIPSE-664. It could be that you have the Groovy Libraries on the classpath twice. This may happen, for example, if you originally imported a Maven project and then added the Groovy Nature separately. The solution is to remove one version of the Groovy Libraries from your classpath.