I'm experiencing an issue where when I go to create an order within the Admin Panel of Magento (1.4.1.1) I can start the order, select the customer, then select the language, it loads all information fine, but when I go to "Add Products I can open that up and select the products, but when I click "Add Selected Product(s) to Order" it shows the loading screen briefly (Please Wait) then it loads nothing.
I can add the items from the wishlist over, or the last ordered items, but not new products from the "Add Products".
I've read numerous threads about this in regards to Magento 1.5 but i'm on Magento 1.4.1.1. Here is a link to a thread where it's briefly discussed. http://www.magentocommerce.com/boards/viewthread/230381/
I've tried the changes to XML regarding the ext.js but I don't think Magento 1.4.1.1 has that .js file. I believe it was implemented in 1.5 so that doesn't help.
Here's the kicker... My friends computer which runs Firefox 11 worked fine last night when adding an item. I upgraded my browser to Firefox 11 but it still doesn't work for me here at the office. Nor does any other browser. I've tried to disable my plug-ins and extensions but that doesn't fix it. I've also cleared all Cache possible (website, server, browsers, etc.)
Can someone please help so I can create an order while a customer is on the phone and not run into this problem? I'm lost on what the common denominator is here.