Weld unable to proxy an initialization block

Weld 2.2.5 unable to proxy an initialization block.
I have a test class:
public class testInitializationBlock{

protected UserTransaction ut;

{
try

{ ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction"); }

catch (NamingException e)

{ e.printStackTrace(); }

}
.........
}

I got the following exception
Exception = java.lang.IllegalAccessError
Source = com.xxx.getInjectionObject
probeid = 408
Stack Dump = java.lang.IllegalAccessError
at web.MethodAnnotatedTestBean$Proxy$_$$_WeldSubclass.<clinit>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:85)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:57)
at java.lang.reflect.Constructor.newInstance(Constructor.java:541)
at org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:113)
at org.jboss.weld.injection.ProxyClassConstructorInjectionPointWrapper.newInstance(ProxyClassConstructorInjectionPointWrapper.java:84)
at org.jboss.weld.injection.ConstructorInjectionPoint.invokeAroundConstructCallbacks(ConstructorInjectionPoint.java:87)
at org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:74)
at org.jboss.weld.injection.producer.AbstractInstantiator.newInstance(AbstractInstantiator.java:28)
at org.jboss.weld.injection.producer.InterceptorApplyingInstantiator.newInstance(InterceptorApplyingInstantiator.java:53)
at org.jboss.weld.injection.producer.BasicInjectionTarget.produce(BasicInjectionTarget.java:116)
at org.jboss.weld.injection.producer.BeanInjectionTarget.produce(BeanInjectionTarget.java:194)
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:149)
at org.jboss.weld.context.unbound.DependentContextImpl.get(DependentContextImpl.java:69)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:742)
at org.jboss.weld.manager.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:840)
at org.jboss.weld.manager.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:855)
...
By the way, this is on IBM JDK.