Xmarks 4.5.0.7 & Firefox 57.0 NOT Working

[jsloan117699]

Installed FF today due to the smaller memory footprint it has vs chrome, but began adding my norm extensions and I am not even able to login to my Xmarks account via the extension. I installed it ran the wizard and entered my information it stated I was logged in and it opened a second smaller window 'Ready to Sync' and that window is completely blank and unusable. All I can do is close it out which doesn't keep me logged in and can't sync my bookmarks without being logged in .. running ubuntu 17.10 but don't think that should matter much for the extension.