ServiceMBeanDelegate.java:170 - 1.2.4.7 - Casts Throwable into Exception causes ClassCastException

public Object invoke(String actionName, Object params[], String signature[])
throws MBeanException, ReflectionException
{
Method operation = getOperation(actionName, signature);
try

{ return container.localInvoke(operation, params); }

catch (Throwable t)

{ --> throw new MBeanException((Exception) t); }

}

This causes an error when the Throwable is an Error.

Recommend:
throw new MBeanException(t instanceof Exception ? (Exception) t : new Exception(t));

I'm having a problem and can't diagnose it becuase the real cause is being hidden because a ClassCastException is overriding the original exception.