Question Regarding Scans

OK, I'm relatively new to BOPM, but I have successfully gotten it set up and linked into my network.

My question is this:

In debug mode ( -dd ), when it says something like "SCAN -> Negotiation timed out some.IP.here (protocol) [default] (0 bytes read)" does that mean that the scan was successful, but no proxy was found??  I have seen several proxies that get on my network that aren't blacklisted, but the scanner doesn't detect them.

Basically, I have no idea whether that message means the scan failed or if it means that the scan was successful and nothing was found.

If that message means that something is wrong, what is the message that means it was successful??

Thanks in advance.