i am getting error when i am trying to load webhtmleditor, code is breaking at the function below and the line is highlited. popup window says object required

function

Sys$_ScriptLoader$_loadScriptsInternal() {

._currentSession;

(session.scriptsToLoad && session.scriptsToLoad.length > 0) {

nextScript = Array.dequeue(session.scriptsToLoad);

._createScriptElement(nextScript);

(scriptElement.text && Sys.Browser.agent === Sys.Browser.Safari) {

scriptElement.innerHTML = scriptElement.text;

scriptElement.text;

}

) {

._scriptLoadedDelegate);

._currentTask.execute();

}

{

);

(headElements.length === 0) {

Error.invalidOperation(Sys.Res.scriptLoadFailedNoHead);

}

{

headElements[0].appendChild(scriptElement);

}

Sys._ScriptLoader._clearScript(scriptElement);

._loadScriptsInternal();

}

}

{

._stopSession();

callback = session.allScriptsLoadedCallback;

(callback) {

callback(

);

}

._nextSession();