Building Placement: Errors

Hi, I have been tearing my hair out this morning over this so I hope someone can help.

I am building an RTS, and I have used the free version of the product to handle the AI for the unit movement. However, when I place or move a ‘building’ in my game, the unit will often stop moving and in the console all I get is “Path Completed…”

I have attached the code being used below.

When I move my building, I call the astar.Scan(); method.

This script is used to move my unit and was mostly taken from one of the examples on the website.

`using UnityEngine;
using System.Collections;
//Note this line, if it is left out, the script won’t know that the class ‘Path’ exists and it will throw compiler errors
//This line should always be present at the top of scripts which use pathfinding
using Pathfinding;
public class v2_Enemy_Move : MonoBehaviour {
//The point to move to
public Vector3 targetPosition;
private Seeker seeker;
private CharacterController controller;
//The calculated path
public Path path;

//The AI's speed per second
public float speed = 100;

//The max distance from the AI to a waypoint for it to continue to the next waypoint
public float nextWaypointDistance = 3;

//The waypoint we are currently moving towards
private int currentWaypoint = 0;

public float repathRate = 0.5f;
private float lastRepath = -9999;

public void Start () {
	seeker = GetComponent<Seeker>();
	controller = GetComponent<CharacterController>();
	//Start a new path to the targetPosition, return the result to the OnPathComplete function
	//seeker.StartPath (transform.position,targetPosition, OnPathComplete);

public void OnPathComplete (Path p) {
	p.Claim (this);
	if (!p.error) {
		if (path != null) path.Release (this);
		path = p;
		//Reset the waypoint counter
		currentWaypoint = 0;
	} else {
		p.Release (this);
		Debug.Log ("Oh noes, the target was not reachable: "+p.errorLog);
	//seeker.StartPath (transform.position,targetPosition, OnPathComplete);

public void Update () 

	if (Time.time - lastRepath > repathRate && seeker.IsDone()) {
		lastRepath = Time.time+ Random.value*repathRate*0.5f;
		seeker.StartPath (transform.position,targetPosition, OnPathComplete);
	if (path == null) {
		//We have no path to move after yet
	if (currentWaypoint > path.vectorPath.Count) return; 
	if (currentWaypoint == path.vectorPath.Count) {
		Debug.Log ("End Of Path Reached");

	//Direction to the next waypoint
	Vector3 dir = (path.vectorPath[currentWaypoint]-transform.position).normalized;
	dir *= speed;// * Time.deltaTime;
	//transform.Translate (dir);
	controller.SimpleMove (dir);
	//if (Vector3.Distance (transform.position,path.vectorPath[currentWaypoint]) < nextWaypointDistance) {
	if ( (transform.position-path.vectorPath[currentWaypoint]).sqrMagnitude < nextWaypointDistance*nextWaypointDistance) {

} `

Can anyone give me some advice? Is the problem caused by the way I am updating the graph?

Specifically, I believe the issue is occurring when I initiate a graph scan.