Question Press with horse errors

02:06] SF Press: Finished! - Soyamilk
[02:06] SF Press: [YEngine]: Exception while running ed025e9b-b9da-473f-a66b-c81b0f23d850
[02:06] SF Press: ArgumentException: An item with the same key has already been added. Key: 691311431
[02:06] SF Press: Prim: <SF Press>, Script: <addon-npc_helper>, Location: Serenity Meadow <93,153,30>
[02:06] SF Press: Script must be Reset to re-enable.
[02:06] SF Press:  at System.Collections.Generic.Dictionary`2[TKey,TValue].TryInsert (TKey key, TValue value, System.Collections.Generic.InsertionBehavior behavior) [0x000dd] in <5dfd69ae4e3b402db546d8ded6fc755e>:0
[02:06] SF Press:  at System.Collections.Generic.Dictionary`2[TKey,TValue].Add (TKey key, TValue value) [0x00000] in <5dfd69ae4e3b402db546d8ded6fc755e>:0
[02:06] SF Press:  at OpenSim.Region.PhysicsModule.BulletS.BSScene.AddAvatar (System.UInt32 localID, System.String avName, OpenMetaverse.Vector3 position, OpenMetaverse.Vector3 size, System.Single footOffset, System.Boolean isFlying) [0x0003a] in <796db9e3b83d4471ae52c44ddf78b95a>:0
[02:06] SF Press:  at OpenSim.Region.Framework.Scenes.ScenePresence.AddToPhysicalScene (System.Boolean isFlying) [0x000b5] in <da310c0bdf3f4d9b93485eced51f5126>:0
[02:06] SF Press:  at OpenSim.Region.Framework.Scenes.ScenePresence.StandUp (System.Boolean addPhys) [0x00376] in <da310c0bdf3f4d9b93485eced51f5126>:0
[02:06] SF Press:  at OpenSim.Region.OptionalModules.World.NPC.NPCModule.Stand (OpenMetaverse.UUID agentID, OpenSim.Region.Framework.Scenes.Scene scene) [0x00035] in <7e93da383159490f914962b9c1a755ad>:0
[02:06] SF Press:  at OpenSim.Region.ScriptEngine.Shared.Api.OSSL_Api.osNpcStand (OpenSim.Region.ScriptEngine.Shared.LSL_Types+LSLString npc) [0x00053] in <284cd03a57674de28415cf9cae2c7283>:0
[02:06] SF Press:  at OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass.osNpcStand (OpenSim.Region.ScriptEngine.Shared.LSL_Types+LSLString npc) [0x00001] in <270aed4312874e02ad3988c10575911e>:0
[02:06] SF Press:  at (wrapper dynamic-method) System.Object.clearUp()(XMRInstanceSuperType)
[02:06] SF Press:  at (wrapper dynamic-method) System.Object.hasNPC link_message(OpenSim.Region.ScriptEngine.Yengine.XMRInstAbstract)
[02:06] SF Press:  at OpenSim.Region.ScriptEngine.Yengine.XMRInstAbstract.CallSEH () [0x00050] in <5dcf4289e65641178aa4f8cd002b1e87>:0
[02:06] SF Press:  at OpenSim.Region.ScriptEngine.Yengine.XMRInstance.StartEx () [0x00009] in <5dcf4289e65641178aa4f8cd002b1e87>:0

picked this uptoday did same thing on x engine so stopped usng it.