How to btrace JBoss AS 7

Question

I'm trying to instrument JBoss AS 7 using btrace but can't get it to work. I'm using visualvm 1.3.7 and the btrace workbench 0.6.7 (right click -> "Trace applicaiton..."). I'm always setting the following non-descriptive error.

!!! Error occured
!!! Error occured

What I tried is setting the following VM options

-Djboss.modules.system.pkgs=com.sun.btrace,com.sun.btrace.annotations
-Xbootclasspath/a:/path/to/btrace-boot-1.2.3.jar

but no avail. I am running on Java 8.

Even simple scripts like this don't work:

import static com.sun.btrace.BTraceUtils.println;

import com.sun.btrace.annotations.BTrace;
import com.sun.btrace.annotations.Kind;
import com.sun.btrace.annotations.Location;
import com.sun.btrace.annotations.OnMethod;

@BTrace
public class Simple {

  @OnMethod(
      clazz = "com.acme.Main",
      method = "main",
      location = @Location(Kind.ENTRY)
  )
  public static void mainEjbCall() {
    println("enter");
  }

}

* Update *

Yes, I assume it's a JBoss AS classloader issue but I don't know how to fix it.

I can profile normal Java 8 applications (even though I get an exception from the ASM ClassReader).