Socks5 not working with 127.0.0.1

Hi,

I've just purchased the license. It's ok but I have problem wih SSH

I using Bitvise tunnel to create a socks5 proxy, eg 127.0.0.1:4671. I sure that no problem with my code because it work with normal socks5 (eg 67.126.57.145:6589) and the socks is work ( I tested by attach it on Firefox, Chrome, IE browser...or PHP CURL). But it's not working when I try login POP3 via the socks. It's error:

pop3OpenConnection:

closePopConnection:

    No POP3 socket connection exists.

Connecting to POP3 server
hostname: pop.gmail.com
port: 995
tls: 1
connectTimeoutMs: 30000
isInSshTunnel: 0
socket2Connect:

    socks5Connect:

        SOCKS5:

            socksHostname: 127.0.0.1
            socksPort: 4671
            socksUsername:

        No SOCKS5 username and/or password, requesting No-Authentication...
        SOCKS5 server is allowing no authentication.
        WindowsError: An existing connection was forcibly closed by the remote host.
        WindowsErrorCode: 0x2746
        numBytesRequested: 4
        Failed to receive data on the TCP socket
        Failed to receive response from SOCKS5 server..

Failed to connect to POP3 server. Timestamp-3: 7:20:32.625 verifyPopLogin: Elapsed time: 31 millisec Failed.

Please check and fix the problem

ps: I know that I can use SSH directly with class CkMailMan but I don't want it. I want create SSH from another program and use local socks 127.0.0.1

Thank you,