what i 've done :
- install openvpn server on Win XP
- install openvpn client on Win 7
install seems good , but when i tried to connect i have the answer in the log "Tap Windows adapter 'MyTap' not found" and crash
here the conf :
SERVER CONF :
port 1194
proto udp
dev tun
dev-node vpn
ca ca.crt
cert server.crt
key server.key # This file should be kept secret
dh dh1024.pem
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "route 192.168.10.0 255.255.255.0"
keepalive 10 120
comp-lzo
persist-key
persist-tun
status openvpn-status.log
verb 3
CLIENT CONF
client
dev tun
dev-node vpn
proto udp
remote X.X.X.X 1194 (masked my IP

resolv-retry infinite
nobind
persist-key
persist-tun
ca ca.crt
cert client.crt
key client.key
ns-cert-type server
comp-lzo
verb 3
and LOG CLIENT
Wed Apr 03 03:52:33 2013 OpenVPN 2.3.1 i686-w64-mingw32 [SSL (OpenSSL)] [LZO] [PKCS11] [eurephia] [IPv6] built on Mar 28 2013
Enter Management Password:
Wed Apr 03 03:52:33 2013 MANAGEMENT: TCP Socket listening on [AF_INET]127.0.0.1:25340
Wed Apr 03 03:52:33 2013 Need hold release from management interface, waiting...
Wed Apr 03 03:52:33 2013 MANAGEMENT: Client connected from [AF_INET]127.0.0.1:25340
Wed Apr 03 03:52:33 2013 MANAGEMENT: CMD 'state on'
Wed Apr 03 03:52:33 2013 MANAGEMENT: CMD 'log all on'
Wed Apr 03 03:52:33 2013 MANAGEMENT: CMD 'hold off'
Wed Apr 03 03:52:33 2013 MANAGEMENT: CMD 'hold release'
Wed Apr 03 03:52:33 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Wed Apr 03 03:52:34 2013 Socket Buffers: R=[8192->8192] S=[8192->8192]
Wed Apr 03 03:52:34 2013 MANAGEMENT: >STATE:1364953954,RESOLVE,,,
Wed Apr 03 03:52:34 2013 UDPv4 link local: [undef]
Wed Apr 03 03:52:34 2013 UDPv4 link remote: [AF_INET]X.X.X.X:1194
Wed Apr 03 03:52:34 2013 MANAGEMENT: >STATE:1364953954,WAIT,,,
Wed Apr 03 03:52:39 2013 MANAGEMENT: >STATE:1364953959,AUTH,,,
Wed Apr 03 03:52:39 2013 TLS: Initial packet from [AF_INET]X.X.X.X:1194, sid=927721bc 8dce7ac7
Wed Apr 03 03:52:40 2013 VERIFY OK: depth=1, C=FR, ST=France, L=Montpellier, O=myname, OU=myname, CN=myname, name=myname, emailAddress=mail@mail.com
Wed Apr 03 03:52:40 2013 VERIFY OK: nsCertType=SERVER
Wed Apr 03 03:52:40 2013 VERIFY OK: depth=0, C=US, ST=FR, L=Montpellier, O=myname, OU=myname, CN=myname, name=myname, emailAddress=mail@mail.com
Wed Apr 03 03:52:40 2013 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
Wed Apr 03 03:52:40 2013 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Wed Apr 03 03:52:40 2013 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
Wed Apr 03 03:52:40 2013 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Wed Apr 03 03:52:40 2013 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA
Wed Apr 03 03:52:40 2013 [patcapa] Peer Connection Initiated with [AF_INET]X.X.X.X:1194
Wed Apr 03 03:52:41 2013 MANAGEMENT: >STATE:1364953961,GET_CONFIG,,,
Wed Apr 03 03:52:43 2013 SENT CONTROL [myname]: 'PUSH_REQUEST' (status=1)
Wed Apr 03 03:52:43 2013 PUSH: Received control message: 'PUSH_REPLY,route 192.168.10.0 255.255.255.0,route 10.8.0.1,topology net30,ping 10,ping-restart 120,ifconfig 10.8.0.6 10.8.0.5'
Wed Apr 03 03:52:43 2013 OPTIONS IMPORT: timers and/or timeouts modified
Wed Apr 03 03:52:43 2013 OPTIONS IMPORT: --ifconfig/up options modified
Wed Apr 03 03:52:43 2013 OPTIONS IMPORT: route options modified
Wed Apr 03 03:52:43 2013 do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0
Wed Apr 03 03:52:43 2013 MANAGEMENT: >STATE:1364953963,ASSIGN_IP,,10.8.0.6,
Wed Apr 03 03:52:43 2013 open_tun, tt->ipv6=0
Wed Apr 03 03:52:43 2013 MANAGEMENT: Client disconnected
Wed Apr 03 03:52:43 2013 TAP-Windows adapter 'vpn' not found
Wed Apr 03 03:52:43 2013 Exiting due to fatal error
Please I Need Help
I try to understand but failed !
Thanks