I'm trying to use " : spring -security-core: 2.0-RC2 " (using Grails version 2.3.1), but I have my LoginController.groovy . After Bert's notes ( here and here ), I copied LoginController.groovy from the source location to "myapp \ target \ work \ plugins \ spring-security-core-2.0-RC2 \ grails-app \ controllers \ grails \ plugin \ springsecurity" in my project location is in "myapp \ grails-app \ controllers \ com \ company". Now I get a bunch of import error messages like " Groovy: Unable to resolve class ... " (I added the image below showing all import errors). How can I take care of these errors?
Sorry if this is a trivial question (still used to Grails) and thanks for the help!

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