I have solved the timing issue between MS Ajax components and EO components.
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Scripts>
<asp:ScriptReference Path="/js/eo_fix.js" />
</Scripts>
</asp:ScriptManager>
<file eo_fix.js>
<!--
Sys._ScriptLoader.getInstance()._loadScriptsInternal = function() {
if (this._scriptsToLoad && this._scriptsToLoad.length > 0) {
var nextScript = Array.dequeue(this._scriptsToLoad);
var scriptElement = this._createScriptElement(nextScript);
if (scriptElement.text && Sys.Browser.agent === Sys.Browser.Safari) {
scriptElement.innerHTML = scriptElement.text;
delete scriptElement.text;
}
if (typeof(nextScript.src) === "string") {
this._currentTask = new Sys._ScriptLoaderTask(scriptElement, this._scriptLoadedDelegate);
this._currentTask.execute();
}
else {
document.getElementsByTagName('head')[0].appendChild(scriptElement);
Sys._ScriptLoader._clearScript(scriptElement);
this._loadScriptsInternal();
}
}
else {
var callback = this._allScriptsLoadedCallback;
this._stopLoading();
if(callback) {
callback(this);
}
}
}
//-->
</file eo_fix.js>