FromOpenSshPrivateKey returns false, but LastErrorText seems to say everything succeeded

I'm running the SFTP Public-Key Authentication example for VB.net. The FromOpenSshPrivateKey returns false, but LastErrorText seems to say everything succeeded. I'm not sure what to make of the return value. Here is the LastErrorText:

 ChilkatLog:
  Connect:
    DllDate: Aug  3 2011
    UnlockPrefix: UPSDEUSSH
    Username: KYLOULAPP5K8Q:app1dak
    Architecture: Little Endian; 32-bit
    Language: .NET 2.0
    SftpVersion: 0
    ChilkatObjectID: 4532
    hostname: 193.191.216.90
    port: 22
    ConnectTimeoutMs: 5000
    calling ConnectSocket2
    This is an IPV4 numeric address...
    AddrInfoList:
      AddrInfo:
        ai_flags: 4
        ai_family: 2
        ai_socktype: 1
        ai_protocol: 0
        ai_addrlen: 16
        ai_canonname: (NULL)
    Connect using IPV4.
    ipAddress1: 193.191.216.90
    myIP_3: 10.123.10.45
    myPort_3: 62024
    connect successful.
    Established TCP/IP connection with SSH server
    clientIdentifier: SSH-2.0-PuTTY_Local:_May_11_2009_17:22:38
    initialDataFromSshServer: SSH-2.0-SFTP Server

    serverVersion: SSH-2.0-SFTP Server
    KeyExchangeAlgs:
      algorithm: diffie-hellman-group1-sha1
      algorithm: diffie-hellman-group14-sha1
      algorithm: diffie-hellman-group-exchange-sha1
      algorithm: diffie-hellman-group-exchange-sha256
    HostKeyAlgs:
      algorithm: ssh-rsa
    EncCS:
      algorithm: blowfish-cbc
      algorithm: 3des-ctr
      algorithm: aes128-ctr
      algorithm: aes192-ctr
      algorithm: aes256-ctr
      algorithm: 3des-cbc
      algorithm: aes128-cbc
      algorithm: aes192-cbc
      algorithm: aes256-cbc
      algorithm: arcfour
      algorithm: arcfour128
      algorithm: arcfour256
      algorithm: twofish256-cbc
      algorithm: twofish192-cbc
      algorithm: twofish128-cbc
      algorithm: cast128-cbc
    EncSC:
      algorithm: blowfish-cbc
      algorithm: 3des-ctr
      algorithm: aes128-ctr
      algorithm: aes192-ctr
      algorithm: aes256-ctr
      algorithm: 3des-cbc
      algorithm: aes128-cbc
      algorithm: aes192-cbc
      algorithm: aes256-cbc
      algorithm: arcfour
      algorithm: arcfour128
      algorithm: arcfour256
      algorithm: twofish256-cbc
      algorithm: twofish192-cbc
      algorithm: twofish128-cbc
      algorithm: cast128-cbc
    MacCS:
      algorithm: hmac-sha1
      algorithm: hmac-md5
      algorithm: hmac-md5-96
      algorithm: hmac-sha1-96
      algorithm: hmac-sha256
      algorithm: hmac-sha2-256
      algorithm: hmac-sha256@ssh.com
    MacSC:
      algorithm: hmac-sha1
      algorithm: hmac-md5
      algorithm: hmac-md5-96
      algorithm: hmac-sha1-96
      algorithm: hmac-sha256
      algorithm: hmac-sha2-256
      algorithm: hmac-sha256@ssh.com
    CompCS:
      algorithm: none
      algorithm: zlib
    CompSC:
      algorithm: none
      algorithm: zlib
    Encryption: 256-bit AES
    Encryption: 256-bit AES
    MAC: HMAC-SHA1
    MAC: HMAC-SHA1
    Compression: none
    Compression: none
    Key Exchange: DH Group Exchange SHA256
    Host Key Algorithm: RSA
    numBits: 256
    pbits: 4096
    Using GEX Group.
    Sending KEX_DH_GEX_REQUEST...
    pbits: 4096
    Received GEX Group.
    Sent e to server.
    Using SHA256 for Exchange Hash
    RSA host key parsed successfully.
    keyXml: <RSAKeyValue><Modulus>h8ASEtD1JwXo1cqi9uFZm6op9TeSx1YGqFj4DKZiyElNaVx81tP3OVpuv1STZU5MmFgWD3DA36/4i3ra0MfUK2+Nx7IC+NjgBMfqIbGIqNP4WrNLWopjoVwpzqhTMhJ8U+a4BmH+hyL4FrF34XGsSJEaR5ru1up6AGnWbeLzECiEv3COP9U7IszongCbF7E2d1Da2RChNFk8JBRa8sgFc1v+7aN9yIj0fpivNMDq2h76mL4edQlf5Pamg/AaFve6wS6f6pfaVSwJyFVHh5avsYJmx/5jE3nmrPYhiX3VeIJEMXDRMKvwuG3mi1wjj82KfQzh/RRGaUcwC4t4PkBu6Q==</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>
    HostKeyNumBits: 2048
    RSA signature verification success.
    Sending newkeys to server...
    Expecting newkeys from server...
    SSH Key Exchange Success.
    Outgoing encryption is now AES 256
    algorithm: aes
    keyLength: 256
    Success.