HELP!! FileDownloader Freezes I.E. 6 on Download (I.E. Not Responding)

FileDownloader is working perfectly for me locally, and I pushed it out to our production server (w/ a Domain license) last night and it works, but not consistently. Every third try, or so, it shuts I.E. 6 down (I.E. Not Responding). It does this right at the point of download, after these steps:

1. Clicked "Download Files"...shows list of files to download, checked off (fine)
2. Clicked "OK" (fine)
3. Selected local folder where downloads will go. (fine)
4. Click "OK" and I.E. freezes with the "Download Progress Indicator" up on the screen, but showing nothing, just sitting there, and I.E. has crashed. (NOT FINE)

Is there a simple reason why this is happening? I really like the product and it works flawless for me locally, but it's useless to me if it can't work EVERY TIME in our production environment.

Any help with this would be greatly appreciated because I really like the product.

Thanks!

Ryan