Graills Plugin / Class not found

Hi guys,

have started to play around with Vaadin days ago.
This is my setup:

Grails 2.2.1
Vaadin plugin 1.7.1
Intellij 12

Simple app runs well.

Using “grails-app/vaadin/app/MyUI” is setup by default.

Adding additional visual component under “grails-app/vaadin” (and referencing it from MyUI) compiles smoothly, but throws Class not found exception after starting the app.

Dropping the classes in “src/groovy” compiles and application runs fine.
Drawback on this approach is, that I cannot access Grails service layer from within “src/groovy”.

Anyone experienced this problem before ?

Thanks for your help …