I am using Grails 2.2.4, Java 1.6 and getting very similar exception:
com.sun.proxy.$Proxy22 cannot be cast to javax.ws.rs.Consumes
I've tried to clean the .slcache and use the suggested actions for the pringloaded-core jar
(in my case actually it is already springloaded-core-1.1.3.jar so it should be more advanced, but still tried)
but with no success
When I use my intellij and run the application I am getting this exception.
Running the application using command line - all is fine.
This JIRA issue seems to be resolved and closed in 2.2.3, but I am using 2.2.4
Thanks a lot