Hi I am getting the following error when I am trying to upload a file.

I am in the process of converting my app from CuteSoft  to Richtexteditor.  I am not sure if their is a possible conflict with the two editors being in the app.  Only the Richtexteditor is being used on the page .

Below is the error and the  code snipit.    If I ignore the error the upload works.

Thanks for your help. 

JavaScript runtime error: Unable to get property 'toUpperCase' of undefined or null reference

for(var i=0;i<tasks.length;i++)
{
var task=tasks[i];
var filename=task.FileName;
if(INSERT_DATE_BEFORE_FILENAME)
{
var d=new Date();
filename=String(d.getFullYear()*10000+(d.getMonth()+1)*100+d.getDate())+"_"+filename;
}
task.SetClientData(filename);
if(usednamemap[filename]||self.finditem(filename))
indexes.push(i);
else
usednamemap[filename]=true;
}