As of VyprVPN for Mac version 2.16.0, we have discontinued support for Mac OSX 10.9 Mavericks. This decision came about due to some of the technical aspects and limitations of supporting both the older and newer versions of OSX.
We realize some of our customers will still be operating on Mac OSX 10.9 Mavericks, so we have made available a version that will still run on 10.9. It is available for download at the link below. Please note, this is the last supported version for 10.9. No new app features or updates will be added for this operating systems.
You can also setup a manual VPN connection using one of our tutorials. Click here to visit our manual setup page. See the relevant sections for your version of OSX.