We have published an update that has resolved the issue for most customers. If you are still receiving errors please enter a support ticket at firstname.lastname@example.org
The evening of 1/23/2017 we published an update to Visualizer to resolve some known defects. Unfortunately this has caused an issue with many customers where users will see an error on start up similar to the image below.
We are looking into this and will have more information available no later than noon on 1/25/2017.
Example error message: