Loading CSV problems in Firefox

I am creating the CSV file from php script, then load it to the grid. It works on IE but it doesn't work on Firefox. The loading message and the bar keep rolling on Firefox. How to fix it? Thanks!

Make sure you don't have cross-site security restrictions (IE and Mozilla/Firefox have many differencies here). For example if you running your page from local file but data comes from the (remote) server - IE will allow this but Mozilla/FF will not.