I've got it running on several boxes as per my signature on ViX 6.0.004, one of which is a Vu+.
Maybe after you've had a few days to chill you might consider installing openmultiboot and then try again on a ViX setup.
It definitely works with just the attached files in /media/hdd/vpn/ and entering your details into the VPN Manager menu options.
Forget script generators and adding crt and pem files, It doesn't need them.
openvpn.zip