I keep trying to re-download Freespace 2 & I keep getting this msg:

File not found

CometBird can't find the file at gogdownloader://freespace_2.

Check the file name for capitalization or other typing errors.
Check to see if the file was moved, renamed or deleted.

Does anyone know how to correct this?

hmmm ... Sou you're not able to download at all? Sounds like a problem on GOG's server end. Try sending a support ticket? Or post in the main forum?

It looks like you are trying to download in the browser, but you have the GOG Downloader feature turned on. Either use the GOG Downloader (make sure it is launched before you start the download) or turn off the Downloader feature so that the browser download will work.

It could also be an incompatibility with the browser you are using (CometBird?). You might try the download with a more mainstream browser like Chrome, Firefox or even IE (ick).