Fail to install VMware-vcops-5.0.1.0-677931-vapp

hi;

i try to install fail to install VMware-vcops-5.0.1.0-677931-vapp on vsphere 4.1 but i have some errors such as:

on UI VM:

starting openvpn .. done

mutual trust already established

tun0 : error fetching interface information : device not found

tun0 : error fetching interface information : device not found

tun0 : error fetching interface information : device not found

tun0 : error fetching interface information : device not found

tun0 : error fetching interface information : device not found

tun0 : error fetching interface information : device not found

tun0 : error fetching interface information : device not found