Hey Everytime I replace the LootTables.json file and reload the plugin or Restart The Server The LootTable Never Changes, Please Help.

you ever find out why?im also having this problem???

You are (i am guessing) not unloading the plugin before you change the data file.
First unload BetterLoot, then edit data file, then save, then reload

well now my problem is

Exception while calling NextTick callback (InvalidCastException: Specified cast is not valid.)
at Oxide.Plugins.BetterLoot.PopulateContainer (LootContainer container) [0x00354] in <8a2bb28651c44dbdb9cdcc3bf6b6748f>:0
at Oxide.Plugins.BetterLoot.<UpdateInternals>m__3 () [0x000c6] in <8a2bb28651c44dbdb9cdcc3bf6b6748f>:0
at Oxide.Core.OxideMod.OnFrame (System.Single delta) [0x00051] in <bae5f1223fce49c493b01571c99dce02>:0