Hi Thom,
If this is still an issue, I suggest for FS machine:
Uninstall Simlink using Windows Programs and Features
If they exist delete directories
c:\Users\username\AppData\Roaming\Navigraph\Simlink and c:\Program Files\Navigraph\Simlink
Then download and install latest Simlink using the default prompted locations.
If still an issue, please posts a screenshot of Simlink Status page using Posting Guide - Uploading Screenshots
Cheers
Ian