Script throwing error Operator '==' cannot be used with a left hand side of type System.Object and right hand side of type Controller

Hello - in my game the player can switch between the first person controller and the third person controller on pressing the space bar.

On hitting a collider however, after three seconds it is switched to the first person controller automatically (without the player pressing space)

I have one script which switches between the controllers, and one script which forces the player into first person.

The problem I'm having is I'm being thrown this errorBCE0051:Operator '==' cannot be used with a left hand side of type 'System.Object' and a right hand side of type 'Controller'

in reference to this line: if(other.tag == "Player" && SwitchCharactersScript.controllerType == ControllerType.ThirdPersonController)

This is the SwitchControllers script:

 #pragma strict
 
 var cam01 : GameObject; // first person camera
 var cam02 : GameObject; // third person camera
 var player01 : GameObject; //first person controller
 var player02 : GameObject; //third person controller
 
 
 public enum ControllerType
 {
     FirstPersonController , ThirdPersonController
 }
 
 var controllerType : ControllerType;
 
 
 function Start()
 {    
     cam02.active = false;
     player02.active = false;
         
     cam01.active = true;
     player01.active = true;
         
     controllerType = ControllerType.FirstPersonController;
 }
 
 function Update()
 {
     if(Input.GetKeyDown(KeyCode.Space))
     {
         ToggleCharacterControllerType();
     }
 }
 
 public function ToggleCharacterControllerType()
 {
     
     if(controllerType == ControllerType.FirstPersonController)
     {
     
         player02.transform.position = player01.transform.position;
         player02.transform.rotation = player01.transform.rotation;
         
         cam01.active = false;
         player01.active = false;
         
         cam02.active = true;
         player02.active = true;
 
         controllerType = ControllerType.ThirdPersonController;
     }
     else
     {
 
         player01.transform.position = player02.transform.position;
         player01.transform.rotation = player02.transform.rotation;
         
         cam02.active = false;
         player02.active = false;
         
         cam01.active = true;
         player01.active = true;
         
         controllerType = ControllerType.FirstPersonController;
     }
 }

And this is the ForceIntoFirstPerson script (which is throwing the error):

 var SwitchCharactersScript : SwitchCharacters;
 
 function OnTriggerEnter(other : Collider)
 {
     if(other.tag == "Player" && SwitchCharactersScript.controllerType == ControllerType.ThirdPersonController)
     {
         yield WaitForSeconds(3.0);
         SwitchCharactersScript.ToggleCharacterControllerType();
     }
 }

If anyone could help, it would be so much appreciated!

Thanks, Laurien