openvpn setup Error

[Guest]

[thelmruts]

Trying to setup open vpn on my firewall.
I just have 2 nics Green and RED
I get authenticated but then i get
Sun Apr 20 02:36:02 2014 There is a problem in your selection of --ifconfig endpoints [local=192.168.10.129, remote=255.255.255.0].  The local and remote VPN endpoints must exist within the same 255.255.255.252 subnet.  This is a limitation of --dev tun when used with the TAP-WIN32 driver.  Try 'openvpn --show-valid-subnets' option for more info.

I only have one network. 192.168.10.x

What am i doing wrong?
What i want to do is beable to connect to pc on my lan and also route all internet traffic through vpn.
Thanks
Mike