Viscosity version 1.6.7 is now available for both Mac and Windows. This version is a small maintenance release that includes updated versions of OpenVPN and OpenSSL as well as small tweaks and fixes.
The Mac version also includes a work-around for instances where Viscosity may become unresponsive while waiting for a stuck ifconfig process. ifconfig is a system networking tool used by Viscosity and OpenVPN, and there have been reports of it hanging or freezing under OS X 10.11.6 and macOS 10.12.
Version 1.6.7 Mac Release Notes:
Version 1.6.7 Windows Release Notes: