Hi mousejunkie. I am sorry to hear that you are having problems getting the Downloader to work successfully for you. I am just having a look through the information about troubleshooting for the Downloader at EA Support's Knowledgebase right now to see if there are any known issues and fixes there.
There are 17 pages as they cover all games but I thought it would be possible that this could be covered in another game section so I have not filtered. If you would like to take a look through too the link is
here.
I have got to some information about possible IE conflicts which could be of help. You can find that
here. I shall keep looking though and post back if I find anything else that looks helpful