Thanks! Redux was updated today and fixed the issue. I appreciate the help!

After today's update. Click on underground belt to place it and get this.....

Notice

Error while running event
LaoderRedux::on_built_enity (ID 6)
__LoaderRedux--/snapping.lua:127:bad
argument#1 to 'pairs' (table expected, got nil)
OK

Game crashes to load screen.