Solved OnStructureRepair invalid cast exception (outdated plugin)

If you try to repair metal window bars you get a error for the following hook:

OnStructureRepair
[05/12/2016 23:58:28] [Oxide] 23:58 [Error] Failed to call hook 'OnStructureRepair' on plugin 'DecaySystem v0.0.0' (InvalidCastException: Cannot cast from source type to destination type.)

object OnStructureRepair(BuildingBlock Block, BasePlayer Player)
{
return null;
}

 

I was wondering why this issue was popping up on HammerTime, any chance you could update it on the hooks in the docs? I checked because I thought that may be why, but I wasn't able to find any changes in docs.