DownloadFile() generates exception if Get() is not (at least) used once before.

[yaehob]

This is the case when using socks5 proxy, maybe it's the only way to get the error, I didn't try anything else.

By the way, NumberOfAttempts doesn't seem to apply to DownloadFile() in this case, even with a value set to 6 I'm quite sure that there is only 1 attempt.