Unable to mine Small Granite Rock

Unable to mine the quest item Small Granite Rock
It approaches the Mineral Deposit, opened the mining window, then throw an exception.

Part of the profile the problem occurs

Code:

			<Gather While="(GetQuestById(67035).QuestI8BH &lt; 15) or (GetQuestById(67035).QuestI8CH &lt; 5)">
				<GatherObject>Mineral Deposit</GatherObject>
				<HotSpots>
					<HotSpot Radius="70" XYZ="208.9226, -4.979166, 15.13734" />
				</HotSpots>
				<ItemNames>
					<ItemName>Large Granite Rock</ItemName>
					<ItemName>Small Granite Rock</ItemName>
				</ItemNames>
			</Gather>

 

Sorry my bad. I think I forgot the tag <GatheringSkillOrder>
It works after I put it back in.