Hello, I have an issue trying ti use the listshuttle component in my web applicaiton. My web application based on: apache myfaces, facelets. I imported the richfaces libraries (version 3.1.4GA) to use some components like rich:datatable and rich:listshuttle. I developed a page (xhtml page) where I'm using the listshuttle component, which is put inside a h:form, and I use a h:commandlink to post the data to the server. WIth firefox everything works fine, but on IE 6 and 7 I had bad surprises. When th page is loaded I'm able to use the component without problems but when i click on the commandlink to post the data I have a javascript error:
Error: 'null' is null or not an object
I tried to investigate on the error debugging the javascript and I discovered that the error is generated in the prototype.js javascript (org\ajax4jsf\javascript\scripts\prototype.js) and exactly in the following line:
prototype.jsf, line 4339

if (window.RichFaces && window.RichFaces.Memory) {
 window.RichFaces.Memory.addCleaner("prototype", function(node) {
 var eventID = node._eventID;
 if (eventID) {
 var cache = Event.cache[eventID];

 for (var eventName in cache) {
 var wrappers = cache[eventName];
 var domEventName = Event.getDOMEventName(eventName);

 wrappers.each(function(wrapper) {
 if (node.removeEventListener) {
 node.removeEventListener(domEventName, wrapper, false);
 } else {
 node.detachEvent("on" + domEventName, wrapper);
 }
 });

 cache[eventName] = null;
 }

 delete Event.cache[eventID];
 }
 });
}

I noticed that when it does:

var wrappers = cache[eventName];

the wrappers variable is null, and therefore it generates the error when it tries to do:

wrappers.each(function(wrapper) {...}

I tried also to understand why on firefox it doesn't generate the problem and it seems like (but I'm not sure) that this code is not even reached!
Does someone have any idea regarding this problem?