Hello, im recieving this error in console: 

Error while compiling CraftMultiplier: 'ItemCraftTask' does not contain a definition for 'owner' and no accessible extension method 'owner' accepting a first argument of type 'ItemCraftTask' could be found (are you missing a using directive or an assembly reference?) | Line: 93, Pos: 35

dont know what i can do here. Thx for help ;)

try

line 93

replace this

if (itemCraftTask.owner != null)
itemCraftTask.owner.Command("note.craft_add", itemCraftTask.taskUID,
itemCraftTask.blueprint.targetItem.itemid, itemCraftTask.amount, itemCraftTask.skinID);
return false;

with

if (itemCrafter.owner != null)
itemCrafter.owner.Command("note.craft_add", itemCraftTask.taskUID,
itemCraftTask.blueprint.targetItem.itemid, itemCraftTask.amount, itemCraftTask.skinID);
return false;

hope it works, not tested yet. ;)