Players LoS goes through walls

[Tbalthrope]

Hello, I am using the Rappan Athuk Module for fantasy grounds, and up till now the LoS on the maps have been working great. Last night though my players were starting to be able to see through the walls. 65212 here is the walls 65213

[LordEntrails]

Looks like you have lighting turned on but LOS turned off. You want both turned on.
65214

[Tbalthrope]

Looks like you have lighting turned on but LOS turned off. You want both turned on.
65214

Unfortunately that wasn't the case the settings looked like this 65215

[Moon Wizard]

Can you post a copy of your campaign folder with your player tokens already on the map where the issue occurs?

Thanks,
JPG