I am receiving this error on a custom object that is preventing the validation from passing.

Any ideas what could be done to fix this?

Type - Custom Object Definition

Problem - CancelEdit is not a standard action and cannot be overridden.

Hello. 

I had been seeing strange behavior on a page - and narrowed down the cause of thisodd behavior to the use of an ActionPoller.  After doing some research, it seems that using an ActionPoller with a dataTable causes problems.

Below is my code.  Does anyone have any suggestions how to refresh this table - but avoid known problems with ActionPoller & DataTable?

Any thoughts would be appreciated.  Thanks in advance.

<apex:pageBlock title="Customer Overview"> 
<apex:dataTable value="{!Customers}" var="cust" id="CustList" width="100%" > 
 <apex:column > 
  <apex:facet name="header"><b>Customer Name</b></apex:facet> 
  <apex:commandLink action="{!invokeService}"
                    value="{!cust.CustName__c}" rerender="blockA, blockB">
    <apex:param name="xxx" value="{!cust.id}"/>
  </apex:commandLink>
 </apex:column> 
</apex:dataTable> 
<apex:actionPoller rerender="CustList" interval="5"/>
</apex:pageBlock>