Objects in object pool not reactivating.

I am setting up an object pool where characters(squirrels) are stored in a homeTree object. They then walk out onto a branch and are flung into gameplay one at a time. There are a total of 6 squirrels, so no more than 6 can be active at any time. As shown below, I have the squirrels activate at the homeExit, move to the launchPoint and wait to be launched. When a squirrel is launched, the next squirrel activates and moves to the launchPoint. After launching, they then move about the level until they make it back to the homeEntrance. When they reach the homeEntrance, they deactivate. If a squirrel touches the homeEntrance and there is no squirrel waiting at the launchPoint, it should appear at the homeExit and activate automatically.

I have two scripts, the SquirrelScript attached to the squirrelPrefab and the LaunchScript, which manages the object pool. My problem is that the squirrels deactivate, but do not reactivate once they make it back to the homeEntrance. And if one touches the homeEntrance before all of the other squirrels have launched, it prevents the other squirrels from activating as well.

Here is the code from the LaunchScript:

 var numberOfSquirrelsToCreate : int = 0;
 var squirrelLoaded : boolean;
 var numberOfSquirrelsHome : int = 6;
 
 function Start()
 {
     squirrels = new GameObject[numberOfSquirrelsToCreate];
     InstantiateSquirrels();
     SetSquirrel();
 }
 
 function InstantiateSquirrels()
 {
     for(i = 0; i < numberOfSquirrelsToCreate; i++)
     {
         squirrels[i] = Instantiate(Resources.Load("Prefabs/prefab_squirrel")) as GameObject;
         squirrels[i].gameObject.SetActive(false);
     }
 }
 
 //Called from the SquirrelScript when a squirrel is launched
 function SetSquirrel()
 {
     if(!squirrelLoaded && numberOfSquirrelsHome > 0)
     {
         for(i = 0; i < numberOfSquirrelsToCreate; i++)
         {
             if(squirrels[i].active == false)
             {
                 squirrels[i].SetActive(true);
                 squirrels[i].GetComponent(SquirrelScript).Activate();
                 numberOfSquirrelsHome--;
                 squirrelLoaded = true;
                 return;
             }
         }
     }
 }
 
 //Called from the SquirrelScript when a squirrel is launched
 function UnloadSquirrel()
 {
     squirrelLoaded = false;
 }
 
 //Called from the SquirrelScript when a squirrel reaches the homeEntrance
 function LoadSquirrel()
 {
     numberOfSquirrelsHome++;
 }

And here is the relevant code from the SquirrelScript:

 function Activate()
 {
     yield WaitForSeconds(0.1);
     transform.position = homeExit.transform.position;
     preparingToLaunch = true; //Prevents another squirrel from loading before the first one has reached the launchPoint
     squirrelActive = true; //Allows squirrel to move to launchPoint
     isJumping = true; //Must be true in order to launch properly
     squirrelDirection = true; //makes sure squirrel is moving to the right toward the launchPoint
 }
 
 function Deactivate()
 {
     gameObject.SetActive(false);
 }
 
 function OnMouseUp()
 {
     homeTree.SendMessage("UnloadSquirrel");
     yield WaitForSeconds(1);
     homeTree.SendMessage("SetSquirrel");
 }
 
 function OnTriggerEnter (theCollision : Collider)
 {
         if(theCollision.gameObject.tag == "homeEntrance")
     {
         Deactivate();
         homeTree.SendMessage("LoadSquirrel");
         homeTree.SendMessage("SetSquirrel");
     }
 }