HI Psybear,
No, just straight browser. I don't use download managers as a general rule.
I don't know what to tell you. If I, and other's, can download without problems, the server is obviously performing as it should, and that's the only thing I have any control over. I have no control over the various routers and switches between your location and the server, over your ISPs settings, nor do I have any control over your local system.
Perhaps try disabling your download manager temporarily? Maybe your firewall is causing some problems? Try adding fsgenesis.com to your trusted sites.