M G [http://community.jboss.org/people/mpgong%40lmco] created the discussion "AOP Instrumentor failed to transform" To view the discussion, visit: http://community.jboss.org/message/552596#552596 -------------------------------------------------------------- Hello I'm in the process of upgrading from JBoss AS 5.0 to 5.1 and previously our app was working fine, but after getting things to start up properly, we get the following error and i'm not sure why it is happening.  This didn't happen before in 5.0. Does anyone know why it would not be able to find the org.jboss.aop.Advised? Thanks ERROR [org.jboss.aop.instrument.Instrumentor] (pool-12-thread-13) [warn] AOP Instrumentor failed to transform org.nfunk.jep.function.Modulus javassist.NotFoundException: org.jboss.aop.Advised     at javassist.ClassPool.get(ClassPool.java:436)     at org.jboss.aop.classpool.BaseClassPool.get(BaseClassPool.java:112)     at org.jboss.aop.instrument.Instrumentor.forName(Instrumentor.java:889)     at org.jboss.aop.instrument.Instrumentor.isAdvised(Instrumentor.java:166)     at org.jboss.aop.instrument.Instrumentor.shouldNotTransform(Instrumentor.java:717)     at org.jboss.aop.instrument.Instrumentor.transform(Instrumentor.java:734)     at org.jboss.aop.instrument.GeneratedAdvisorInstrumentor.transform(GeneratedAdvisorInstrumentor.java:119)     at org.jboss.aop.SuperClassesFirstWeavingStrategy.instrumentClass(SuperClassesFirstWeavingStrategy.java:202)     at org.jboss.aop.SuperClassesFirstWeavingStrategy.translate(SuperClassesFirstWeavingStrategy.java:69)     at org.jboss.aop.AspectManager.translate(AspectManager.java:1071)     at org.jboss.aop.AspectManager.transform(AspectManager.java:1015)     at org.jboss.aop.standalone.AOPTransformer.aspectTransform(AOPTransformer.java:87)     at org.jboss.aop.standalone.AOPTransformer.transform(AOPTransformer.java:75)     at sun.instrument.TransformerManager.transform(TransformerManager.java:169)     at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/552596#552596] Start a new discussion in JBoss AOP at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]