Hi,
I'm getting this Exception when progress comes to an end and the initial button should be shown again.
The numberOfSessionInViews param is configured to 25. The requests for the currentValue are limited to 2 or 3,
so that should not be the root cause. I used the code from the demo page.
<h:form> <a4j:outputPanel id="progressPanel"> <rich:progressBar id="scanProgressBar" value="#{scanProgressBarBean.currentValue}" interval="500" enabled="#{scanProgressBarBean.enabled}" reRenderAfterComplete="progressPanel" minValue="-1" maxValue="10"> <h:outputText value="Scanned pages {value}"/> <f:facet name="initial"> <a4j:commandButton action="#{scanProgressBarBean.starteScanProzess}" value="#{msg.btn_starteScanprozess}" styleClass="hmgButton120" reRender="progressPanel" rendered="#{scanProgressBarBean.buttonRendered}" /> </f:facet> <f:facet name="complete"> <a4j:commandButton action="#{scanProgressBarBean.starteScanProzess}" value="#{msg.btn_starteScanprozess}" styleClass="hmgButton120" reRender="progressPanel" rendered="#{scanProgressBarBean.buttonRendered}" /> </f:facet> </rich:progressBar> </a4j:outputPanel> </h:form>