"TLS_ERROR: BIO read tls_read_plaintext error: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed" when attempting openVPN connection

I have recently setup openVPN on a computer, built a ca authority, and generated certs for a client computer. I can connect the server fine, however upon attempting to connect from the client computer I get multiple errors(blotted out some info):
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Sat Apr 03 00:13:24 2010 UDPv4 link remote: **.***.***.***:1194
Sat Apr 03 00:13:24 2010 VERIFY ERROR: depth=1, error=self signed certificate in certificate chain: /C=US/ST=**/L=*******/O=OpenVPN/CN=VPN/emailAddress=*******@********.com
Sat Apr 03 00:13:24 2010 TLS_ERROR: BIO read tls_read_plaintext error: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
Sat Apr 03 00:13:24 2010 TLS Error: TLS object -> incoming plaintext read error
Sat Apr 03 00:13:24 2010 TLS Error: TLS handshake failed
Sat Apr 03 00:13:24 2010 SIGUSR1[soft,tls-error] received, process restarting
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Serverside I get peer connection reset errors (error code: 10054) and numerous messages about failed TLS keynegotiation ending with TLS handshake failing though this seems to match up with the client log

I cannot figure out the error, running the latest openVPN on Windows XP with the same config file found here: http://www.itsatechworld.com/files/server.ovpn though with the server IP changed to my internal address

client config can be found here: http://www.itsatechworld.com/files/client1.ovpn

the setup mirrors a working VPN configuration (I just followed this guide http://www.itsatechworld.com/2006/01/29/how-to-configure-openvpn/   ) and I've checked everything

What course of action should I pursue?