Illegal constant pool index error in grails

I have a grails开发者_StackOverflow application that i have deployed on my linode box. It was running fine for a few days but now gives this error on all pages:

Caused by: java.lang.VerifyError: (class: org/codehaus/groovy/runtime/InvokerInvocationException, method: getMessage signature: ()Ljava/lang/String;) Illegal constant pool index

Googling indicates that this is a weaving problem, but not how to solve. Has anyone encountered something similar?

---

I've just worked around this error in gwt... I don't have time to try all the possible values for the variables involved but it appears it was related to using different version of javac for different parts of the process... I was compiling the gwt code using jdk5 and running app code in jre6