Running a JUnit Test (java 7, eclipse EE Juno r1) trying to generate a Jasper Report pdf file I've got the following error:
java.lang.IncompatibleClassChangeError: Found interface org.objectweb.asm.MethodVisitor, but class was expected
at org.codehaus.groovy.runtime.callsite.CallSiteGenerator.genConstructor(CallSiteGenerator.java:141)