Windows 7 error reading client config file

[jrunrumbash]

I set up a vpn server that works fine. I sent two friends the client keys, they are both on windows 7 like me. One connected first time with no problems, the other keeps getting "error reading the client config file" when he tries to run it. We have tried running it using command prompt with privileges, right clicking and i have sent certs again and again. He has disabled his firewall to no avail. We are stumped, please help.

Here are the server and client files

server ip sub
port port
ca "C:\\Program Files (x86)\\OpenVPN\\config\\ca.crt"

cert "C:\\Program Files (x86)\\OpenVPN\\config\\server.crt"
key "C:\\Program Files (x86)\\OpenVPN\\config\\server.key"
dh "C:\\Program Files (x86)\\OpenVPN\\config\\dh1024.pem"
dev tap
proto tcp
keepalive 10 120
client-to-client

client
dev tap
ca "C:\\Program Files (x86)\\OpenVPN\\config\\ca.crt"
cert "C:\\Program Files (x86)\\OpenVPN\\config\\client.crt"
key "C:\\Program Files (x86)\\OpenVPN\\config\\client.key"

remote ip port
proto tcp

[jrunrumbash]

We found the problem one of the clients had B:/ as his main drive, not C:/. All is well.