Can anyone confirm this is a bug with CC?

xp = peripheral.wrap("right")
xp.setAutoCollect(true)

function clear()
  term.clear()
  term.setCursorPos(1, 1)
end

function clearInv()
  while turtle.suck() do
  end
  for i = 1, 16 do
	if turtle.getItemCount(i) > 0 then
	  turtle.select(i)
	  turtle.dropUp(turtle.getItemCount(i))
	end
  end
  turtle.select(1)
end

clearInv()
timer = os.startTimer(1)

while true do
  print("I have "..xp.getLevels().." levels to spend!")
  for i = 1, 20 do
	while turtle.attack() do
	end
	sleep(.5)
  end
  clearInv()
  if turtle.getItemCount(1) > 0 then
	error("Consult JJSax reguarding this issue. \n Item in inventory at wrong time.")
  end  
  clear()
  turtle.select(1)
  while rs.getInput("left") == true do
	print("Enchanting mode active.  I have "..xp.getLevels().." xp points")
	print("Put the Item into slot 1")
	while turtle.getItemCount(1) == 0 do
	  sleep(1)
	end
	xp.enchant(30)
	print("Please take your newly enchanted item")
	while turtle.getItemCount(1) > 0 do
	  sleep(1)
	end
	clear()
	print("Please turn off lever")
	os.pullEvent("redstone")
	clear()
  end
end