I tried this a long time ago when I acidentally upgraded to version 6. I was using that version (5.1) for several months. It was working great and then one day last week when I went to go on it gave me that error also.

I just ran a search on my computer and indeed the "BSidle.dll" file is missing from my computer.

Does anyone know if and how I would be able to get that file back so I can start up my bearshare?

As stated above, I have tried deleting and downloading again, starting bearshare with my McAfee disabled, and downloading all of the old versions and nothing works.