Reasons for this issue occurring
Reason 1
The first is that your lightsaber does not have any force powers attached to it. You wouldn't be able to see the force meter in this case either.
Reason 2
If that wasn't it, then it is most likely a conflicting addon that is overwriting the hook. Usually, the addon that is left installed mistakingly is our Advanced Lightsaber Attack System. Remove the addon from your server and it should work.
The link to the conflicting addon is here: http://steamcommunity.com/sharedfiles/filedetails/?id=919270611
