i have the same problem ,can't make addRenderHeadListener and
ajaxselfupdatingtimerbehavior work together,
it's not due to race condition is what i know at least that is what
exception is pointing ..
any pointer will be appreciated ..
thanks,
--
View this message in context:
Found the problem. We had two AjaxSelfUpdatingTimerBehaviors added to two
different components and they were both set to 5 seconds. What's funny is
that if we commented out the addRenderHeadListener calls in the Application
class we would not get the error. My guess is the header listeners