sbraudrick, your problem is because you are trying to install an installer file made for a more up-to-date operating system than you actually have. Don't do that. Always pick the installer file that matches your operating system NAME and VERSION. For example if you try to install the installer file for Ubuntu 16 on an Ubuntu 12 system, you're gonna have problems like these.
To solve this you need to either:
- use an installer file for your OS name and version, and perform the upgrade that way
- if that's not available because your OS is old, update the OS to newer version, then install the new Access Server
- alternatively, backup your data, install a new up-to-date OS, install latest Access Server, restore a backup of the old data
In some cases you need a new license key which must be arranged through the support ticket system.
Personally, if I find my system is Ubuntu 14 and I need 16, an upgrade is perfectly possible. If I find my system is Ubuntu 8, and I need 16, I'm better off doing a backup, then a fresh install of Ubuntu 16, and then installing Access Server and restoring the database backup.
For further details I suggest you contact the support department at
www.openvpn.net > sign in > support.
